Joe Schmoe: Good point. I love bass, but am willing to sacrifice in this case (especially since this is intended to be background music). The size of the room, and my listening proximity is what made me think of the T-Amp in the first place, since I've always been curious about it. You're probably right, I'm sure I can sacrifice on the efficiency part a bit -- 15W at 2-4 feet should be very reasonable with any normal speaker.
WmAx: thanks for the suggestion, I hadn't heard of those speakers before. The price is a little high, but when you factor in a separate T-Amp and shipping, it's not so bad.
I'm also adding the BIC Venturi DV62si to the list -- cheap, decent efficiency (90db), and supposedly good bass for the size.
Thanks