Those 3 amps are traditional solid state and have a harder edged sound that I can only describe as "solid state." I've not played the Eden but the Hartke is really good while the Acoustic is decent but doesn't knock me out. The Hartke has the Fender tone stack which is different from all the other amps, but I'm too tired to go into it so google "Fender tone stack" for an explanation if you don't already know.
The PF350 is a micro, and a little softer around the edges. To me it sounds closer to a tube amp than the others, although nothing quite compares to tube amps. I've had one for a year and it's a terrific little amp that sounds like Ampeg.
thanks a lot!
