Contrast/compare 50W tube amps

Have you considered the AES Sixpac amps? They are made by Cary, are very nice, and IMO are a bargain. For a few dollars more you can have Cary upgrade the speaker binding posts, add a balanced input, and install upgraded caps. You can change the KT-88 tubes for KT-66's if you like a warmer sound. They are 50wpc with KT-88 tubes. Here are a couple of reviews:

http://www.positive-feedback.com/Issue6/sixpac.htm
http://www.soundstage.com/revequip/aes_sixpacs.htm

BTW I have no affiliation with Cary or AES; I just really like the amps.

I have some issues with the Cary gear,would rather consider the VAC Renaissanceor PHI series.
Same for the ARC and CJ,both have an identifiable signature on the music.Sorry -don't wish to offend!
Thanks for the observations.The GM-70 and Quickies are moving to the Front-of-the-Pack.
No further comment on the Atma-Shere/OTL route??

Many would be quite happy with the DeHavillands. But I could not get them to drive with the energy of the Quickies.

Tpsonic, any reason the Conrad Johnson MV60 (55 watts/ch with EL34 tubes) or MV60SE (60 watts/ch with 6550 outputs) aren't on your list?

I have the MV60 and find it very musical with more than adequate power. (I listen to a wide range of music, though 95 dB average is the high end of my volume range. 80 to 85 dB is a more typical volume and the amp powers my 87 dB/watt Spendor S5e's just fine to the highest volumes I listen at.) The 6550 MV60SE might be the better choice for the top & bottom end, but there is certainly no substitute for the magic of EL34's in the midrange.

I like Jaybo's recommend of Quicksilver, Did not see the model he mentioned, but the model used for sale, Silver 60 monos, at 40 lbs/per mono, has 4 EL34's per side. Really nice at $1680. Looks to pack a punch.
I agree with Tpsonic about the ARC's, "identifiable signature on the music", very much so. Heard my friends older 200 model and the new VS110's. Smokey, grainy, bland.
Heard one older CJ monos, again, has a "CJ house sound".
Man that Silver 60 monos looks tuff. Man wish I had the bucks.