If you own one of the BA sleeping pads that is comparable with their inflation bag, I would highly recommend getting one.
Not that I don't mind blowing up my sleeping pad every night, its that I do worry about condensation building up on the inside of the pad. Also, when I take one of the kids with me, that makes for a lot of huffing and puffing. I had been looking at trying to modify one of the battery powered inflators from Thermarest but, one was under powered and the other was a bit heavy.
The Pumphouse Ultra has made quick work of inflating my pads (Q-Core SLX) with a minimum weight penalty to my pack. I have also taken to using mine to store my quilt in since it is waterproof.
I got mine at REI for about $35.
Jeremiah