P.S.
I compared a demo MC402 to the vintage 2205. The 402 was undoubtedly the better of the two. It had marginally deeper, tighter bass. The soundstage had considerably more depth and more dynamic range (150 extra watts helps, I'm sure). The largest difference I found was the tonality. The 2205 was somewhat dark on the top end. I'd say it's a rich sound, but not very transparent. The 402 is much more open. Very natural (realistic) sounding. I was so convinced, I bought a new 402. It's breaking in as I type. Thanks again for all the responses!
Relax, have a Thomas Hardy's Ale and listen to some Duke Ellington...