Can anyone give me insight on the new samson sx power amps? I have been looking at them as well as some others for a resonalbe priced replacement. Do they compare well to the rmx qsc series or others? Thanks for your time. Also, does anyone else have a problem with thier acme b-4 killing poweramps? I have had to send my stuart 2.1 back 2 times now because it dies within a year playing through my acme.