Center Channel

I currently have a Monitor Audio Gold C350 center channel and have been contemplating getting the Monitor Audio PLC350. Unfortunately I can't compare the two. Has anyone compared the two to each other?  Are there significant differences between center channels that justifies paying 5K for a center channel? 
I like the Gold better. Doesn't try so hard to be "detailed".
Very interesting comments. Everyone says "the center should match the fronts." I have PL500s and have been thinking about the PLC350, but I'm honestly trying to stop changing equipment when I don't "hear" a reason to. Since I don't have a dealer that has the PLC350, I thought I would ask the question. Thanks for taking the time to respond.
The issue is not comparing one center speaker to another, it's as you say,
"the center should match the fronts."

With stereo only the image is created by 2 identical speakers. A different L&R would not create much of an image. Now with a center channel between the L&R, the image is created between the left to the center, then the center to the right. The perfect scenario is to use 3 identical speakers across the front, however that can only be done in specific situations. The next best thing is a timbre matched center to the L&R.

Take a look here especially the last line,

Here's another good read about matching front and rear, but the principle applies to matching the center. Looking at that picture, think about the airplane actually starting in the left front speaker moving across the front, then through the room from the right front to the left rear. The only way to create that sound perfectly is to use all identical speakers throughout the room. Again, that can only be done in certain situations and timbre matched speakers will definitely be better than mismatched.

Your current center is a much better match than a different brand would be, but the timbre matched center should be better than that.

Thanks. I read both articles including the last line, "With movies being recorded and mixed in the studio with 5 (6 or 7) identical speakers, shouldn't we be listening to our movies at home with 5 (6 or 7) identical speakers?"
In my situation it's unrealistic to have five Monitor Audio PL500 IIs. I'm thinking about the transition from left to center and center to right when viewing movies and I'm happy with my current setup. I've spent a lot of money(at least to me) on my 2-channel and just can't seem to justify spending almost 6k on the PLC350 II center to match my fronts. Thanks for your input.
@ricred1 - have you looked at the PLC 350 for sale on Audiogon?  For $2755 sold by tmraudio?  It's the first generation, but it may still be an upgrade from your Gold C350.  The woofer/mids are similar RDT drivers to the "II" series, but the tweeter is the old C-CAM (same as in your Gold C350).  The PLC 350 II has a different MPD ribbon tweeter as well as different crossover points. 
I've looked at the PLC350 that TMRAUDIO has listed. I will contact Monitor Audio and ask if the old PLC350 is a better match/significant step up from the Gold C350.
As a matter of fact I've reached out to TMRAUDIO to possibly trade my Dynaudio C20s that I use as rears, with the thought of having 5.1 surround sound with all Monitor Audio Platinum speakers(PL500 fronts, PL350 center, PL100 rears). I will keep my JL Audio F112 v2 sub.

after talking to Monitor Audio and considering the price difference between the series 1 and 2, I purchased the PLC350 from TMR Audio and should have it on Monday. I already have the Gold series one and everyone that I talked said, the PLC350 series one is a serious upgrade. I will post my thoughts on Monday.
Thanks for the update!  I'm interested to see how the PLC350 will work out.
I almost purchased the series II but I couldn't get over paying 5K for the center channel.
Already wondering if there is a "significant" difference between series I and II. The good news I can upgrade the series I to the II's.
I understand  now why so many suggested I should get the PLC350. I don't want to play the better game, but although it's the series 1, I now know what seamless means between the fronts and center. The Gold C350 brought attention to itself. 
The only problem to my ears is the PLC350 requires more power than my Marantz SR5011. Any suggestions? Any thoughts on Rotel AV separates? 

That's very cool.  In my opinion, the front 3 channels should be as close to the same sonic signature as possible.  Surrounds are less critical.

What are you using to drive your PL500s?

I use a Jeff Rowland 625 S2 amp and the HT bypass on my Jeff Rowland Corus preamp. Any suggestions on a AVR or AV separates below 5K?

You're going to laugh, but I'd look at Marantz AV8802a for an AV processor, if you're interested in one.  I don't know the sound of Jeff Rowland, so I'm not sure what to recommend for a center channel amp.  Maybe a single Parasound JC1 monoblock?  They are going for $1800-2200 on ebay.

You could always go with the larger Marantz AV7011 receiver.  It has a larger power supply for better power output, but it's still not going to equal a good amp.

Thanks for the suggestion. I
Just purchased a ATI 1803 and I’m looking for a used or demo discontinued Marantz AV preamp.

We had the Marantz 8802a and the Anthem AVM 60 was better and at $3k it is a fantastic piece, not to mention the best room correction in the business.

The ATi amps are quite good, they are fairly neutral with great punch. I think the Parasound Halo three channel amp might have been a touch smoother, but I also don't know the price of the ATI.

Dave or Troy
Audio Doctor
I purchased a Marantz AV 7702 mkII  and order the AT523NC 3-channel Amplifier.