If you operate CW a lot I would consider the THP 2.5KFX. The owner of THP will always answer your email queries and is very helpful.
The SPE amps still have issues with CW timing and failing without warning. Several members in my contest club have had issues with these amps failing on CW.
These failing are not on the early model SPE amps with known issues, but the current model amps.
If CW is not an issue with you and you mostly operate SSB, choose the amplifier with the best IMD performance. The SPE amplifiers do have very good IMD performance on SSB.
The ones that I have tested with my radios have clean signals, without the normal ALC induced splatter that you find on so many ham 1kw solid amps. The SPE amps seem
to handle transient power spikes very well.
I second the Tokyo-HYPower 2.5KFX. That's one hell of an Amp, they don't call it the 2.5KFX for nothing
All Tokyo HY-Power builds some of the best Amps, they pay attention to every detail and they have protection circuitry that catches just about any fault before damage occurs.