Definitely audition them with your speakers. Whether it works for you may also depend on the size of the room. Ten watts isn't a lot but my FX10 has more than enough power in an 11x11' office with a pair of fairly inefficient single-driver speakers. I continue to be amazed at how satisfying the sound is and I've had no problems with the FX10 listening to it several hours a day.
If you're new to tubes the FX10 is a good introduction. The auto-bias feature means you don't have to deal with that for awhile. Some tube amps that aren't auto-bias make it easy to set the bias manually but some are a pain in the ass to deal with.
Another advantage is that upgrades to the EL84 and 12ax7 tubes are relatively inexpensive and the amp does respond well to an upgrade from the stock EH tubes.
If you're new to tubes the FX10 is a good introduction. The auto-bias feature means you don't have to deal with that for awhile. Some tube amps that aren't auto-bias make it easy to set the bias manually but some are a pain in the ass to deal with.
Another advantage is that upgrades to the EL84 and 12ax7 tubes are relatively inexpensive and the amp does respond well to an upgrade from the stock EH tubes.

