Recommend Higher Power SET Amp

How about a Manley Neo Classic SE/PP 300B. It can be switched from single ended to Push pull configuration on the fly.

http://www.manleylabs.com/containerpages/seppneo.html

The VAIC 520B output tube can deliver 30w in single SET (in the Classic 52B VAIC amp), and 55W in double SET (in the Reference 52B). VAIC also puts out a 320B double SET (Reference 32B) with 40 watts. The tubes are made in the Czech Republic, and the amps are hand-built in Vicenza Italy by MasterSound. Prices vary from $15,000 to $22,000 approximately (thus, out of your price range, but a few pop up in the European second hand market from time to time, at substantial savings). These amps are very controversial (I once had a conversation with Dr. Kron of KR about the merits of VAIC tubes; and there are some controversies about the Audio Note/VAIC joint venture as well...), but, with modifications, these amps equal the performance of lower wattage SETs, yet can drive "normal" (low efficiency) speakers. I own the 52B variant, and drive 87 dB speakers with no problem. The other alternative I would suggest are WAVAC amps (second hand, if you are lucky).

I own a Transcendent Sound T8 stereo OTL, 25 watts/side into 8 ohms, paired with the Merlin VSM-M, and a pair of Zero autoformers, and never felt wanting for more power. Once you tried OTL, you will not go back to regular amps, tube or SS. Transcendent Sound just came out with a low power OTL kit, $1099 for a 15 watt stereo unit. Looks great and I am sure sounds great too. With the Zeros, you can get away with 15 watts.
Here is a link for info about the Zeros:
http://www.condor-connection.org/asog/tweaks/ps/zero/index.html
Also read about it on the ASOG bulletin board:http://www.condor-connection.org/asog/bbs/index.html
Good Luck

I would second the Manley SE/PP mono blocks. I picked up a pair about a year old for about half price. I also have the Cary 2A3 MB's but wanted a bit more "push" for when I use a pair of speakers other than the AV's. This is a very nice pair of amps and are adjustable from a tonality stand point. Also a big factor (for me at least) is they have the XLR input option and include an IEC fitting. Besides the SET to PP selectability you can also dial in feedback from zero to 10 db via 1 db steps. I am quite impressed with these amps and think you may be so inclined as well.

For more power, the Atma-Sphere amps like the M-60's and my favorite A-S amp, the MA-1's, on the Super Eclipses are just stunning. If you can get the right NOS tubes, good cabling and a very good balanced pre-amp to feed the MA-1's, you will be rewarded. You may have trouble if you don't get those elements right. I struggled.

I have long advocated much more power be used with the Coincident Super Eclipses than their commonly associated SET's and other low-powered tubed amps produce. (See my comments on other Coincident threads.) The Cary SLI-80 integrated amp has been paired with the Supers by several posters on AudiogoN. I currently use the Cary SLAM-100's: 95 triode watts (from beam tubes) with satisfying results indeed.

Interestingly enough, I just received a recommendation from the Supers' manufacturer that the Antique Sound Lab Hurricane DT200 mono blocks work very well with the Supers, Totals, and--believe it not--the highly efficient Victory speakers. The Hurricanes put out a whopping 200 watts! Israel said they are at once powerful, retrieve detail, and retain harmonic and tonal structures very well. Quite an accomplishment in a large amp.

I like SETs in small rooms with intimate music, but if you want the flexibility to go with large orchestral music or rock/pop in larger rooms, a more powerful amp takes over and really does the power-weight-physical-presence thing justice.