This was discussed on audioasylum some weeks or months ago. Most preferred the 303/300 but one particularly experienced Cary enthusiast definitely preferred the 308T after some tube rolling.
Funny you ask. I would say the 303/300 has better detail and some other attributes (I listened but not in my system), but I was listening to my 308T last week with Mullard tubes (I heard there are better matches out there but don't tube roll much), and I was wondering what I could be possibly missing. I think the fact that the 308T is sooo musical with good tubes and the midrange and openness are enough to make you wonder if it can get better (I realize it can). It's ok if it doesn't have all the other attributes. Worth the price difference - that's a tough one. I haven't upgraded. But then again I work for a living.
I just think the 308T is one of those players that got something right. I've preferred it to more expensive, more detailed CD players, because of it's addictive - musical qualities. I just can't sell it. NOS tubes are a must.
The Cary to me is like a Jolida JD100's bigger brother (with much better detail) -That kind of addictiveness if you KWIM?
But head to head the 303/300 has more "audiophile" quailities going for it.
I'm thinking about the 308T to match with my Cary SLI-80 right now. I've also had good recommendations for the 306/200, which was given good reviews. Does Robm321 have a view regarding this comparison? I appreciate the comments re the JoLida JD-100 as, when I heard it, voiced with the JoLida 502b, it seemed timbrally rich, even saturated. Thinness is something I've encountered with a few players.