Best Used Solid State Amp for less than $5000?


I'm sort of toying with the idea of upgrading my amp (threshold S300 - I know, its old) and the one amp that jumps out is the pass X250 which seems like it can be had for about $3000 to $3500 on the used market. Is there anything else that comes to mind? I can't afford the Tenor hybrids and even the Lamm SS's are about $7 to $9K. The rest of my system is as follows:

CF PFR
Fanfare FT-1
Parasound Ultra 2000 CD
Nakamichi DR1 deck
Stax Lamda phones
Sota Star table w / emt
Pass Aleph ono phono
Hales T8 loudspeakers

Would appreciate any suggestions you may have.
russellrcncom
The Goldmund Stellavox amps are simply sunning in every sonic respect. They sell for $3600 to $4000 new, and are worth at least twice that amount. What about these little amps makes me say this? For one, they are ultra fast amplifiers, with clean and uncluttered articulation of the most demanding material. They have a solid bass, and a neutral to slightly forward midrange with detailed highs. After 100 or so hours of burn in, you get the most amazing layered and 3 dimensional soundstage very much like a quality tube amp such as the better Cary or CJ amps. Yet, these 200w RMS monoblocks are only 10lbs in weight and about the size of a hard back book. I hate to rave about anything in the audio world, because I have been around a long time, but these things are worthy of some praise.
I still believe Aloia amps(15.0I) are one of the best buys in audio. I've seen them for as low as 2k