Lehman Black Cube or Fisher 500C?

OK, Thanks for the input so far guys but I should have completed the scene with the rest of my system. The Fisher was brought in to act as a full featured unit for a secondary pair of speakers which I know it will match up to beautifully: Silverline Sonata 2's (8 ohm with very little variation from it and 95db efficient). This will be fed from the dac of my main system when I'm not simply using the tuner on the Fisher. My main system would not permit the Fisher to power it... Speakers are Apogee Duetta Signatures (approx 83 db efficient and a pulverizing 3.2 ohms +/- a little...) Amps are usually my Conrad Johnson Premier 12's (140 per channel using 4 x 6550's per channel) which is fed into the Apogees after going through an external crossover which splits the signal at 50hz and below into a Rel Stadium 2 sub while the CJ's handle above that into the speakers...
While I'm pretty sure the turntable should sound very nice through the Fisher into the Silverlines,I was hoping to integrate it into the main system as well. So: TT to Lehman to Fisher (aux input?) then the Fisher as a linestage... but that must make it all the way (18') via unbalanced I/C's all the way to my crossover.... which might be limiting on the top-end frequency extension?... I don't know. I was hoping I could skip the Lehman and run TT to Fisher's phono, then out to the Line 3's input and take it from there...
Regardless of all this, that's an awful lot of I/C's..
Maybe I'm better off not trying phono into the main rig and just enjoying it into the Sonatas... I'm sure it will be very nice there....

Thanks for the input Lewm. The crossover does have a high pass filter (choices of 50, 80, or 110 hz) which is what helps the CJ handle the Apogees without issue. Should I really ask the tech to try to increase the phono gain or should I just try it all first? My other question for the tech is should I have him install an IEC jack (which I happen to have available) into the Fisher so I can use aftermarket pc's or would that be blasphemous (all else in unit will be restored as original). Thanks for your input. And yes, I'm excited about hearing the Fisher into the Silverlines too.

I just picked up the Fisher, they did a nice job. The tech says he owns 4x500c's personally and one 800 (is that a model?) and loves them. That said, he poured his heart into replacing everything he thought it could use and cleaning it up nicely : Note: he kept the tubes which he found in it which were not all original but all tested strong and appear pretty "vintage" to me. He said they were playing music through it for the last 3 days to break it in and it was the best sounding receiver he has had in his shop....He compared it favorably with some Mcintosh unit he still uses, I don't know the model..... He also says he thinks my Benz may be ok for the "low-output" input of the unit. My TT should be set up asap and I'll try to post my experience with it then. Thanks for all the help..