Atma-Sphere MA-1's are fabulous with the Super Eclipses. They're way more money than you mentioned as your budget--even used. But, hey, I thought I'd mention them anyway.
To me the 'Super E's' sound better with much more power than lots of folks tend to use. My room and music tastes (large orchestral) seem to demand more power than others need. It's great to see that many people are recommending the ARC VT-100 (100 watts, class A/B1).
The Cary SLAM-100's (95 push/pull triode mode watts, class A/165 tetrode A/B) are also really, really nice with the Super Eclipses.
The Cary SLAM-100's sound big and powerful; yet open, detailed and musical. They can be switched between triode and tetrode mode on the fly, have 8 and 4 ohm switches, and have bias ports and pots for each phase (1 push, 1 pull) per channel to minimize cross-over notch distortion and allows for using four matched pairs instead of two matched quads of output tubes. SLAM-100's can be acquired for $3000 used.