Luxman - Shindo - Mcintosh ?

I have 2 of the Luxman MQ88uSEs (basically the same as that listing from US Audio Mart). I'm running them in mono configuration from a Backert Labs Rhumba Extreme preamp. The sound is incredible, and I'd recommend you jump on that listing if you have the budget. The uC version has 16 ohm speaker taps. There is a transparency and shimmer to the Luxman sound that is magical - but with the KT88 power tubes there is plenty of tight, dynamic bass as well. I don't know much about the other amps you listed but I cannot imagine anyone in the market for a tube power amplifier would be disappointed with the MQ-88uC. 

Whoops. My bad.

Sorry, I was under the mistaken impression that you were shopping for a preamp.

Never mind. However, if you're considering a tube power amp you might find it enjoyable and educational to read Roger Sanders' "transistors vs. tubes" white paper. IMHO very helpful.

The Luxman would be a good choice for the Altecs, the Shindo not a great match up. I heard this combination at a friends and other amps worked better with the Altecs

...do you think the MC225 would be the best value ?

Best value?  Dunno.  They go for about the same as the MC240.  But the amp only has 2 gain stages (as opposed to 3 on the MC240) and the 7591A tubes make for a very sweet sound.  I've owned lots of tube amps but this one is my all round favorite.

All the amps you listed and are being recommended are wonderful.  I think the MC225 is special but you really need to hear a few so that you can judge for yourself.  If you but a good amp at a fair price you will always be able to sell it for at (or near) what you paid.

Thank you, I am continuing my research based on all your great comments and advice.