The Orbit, however convinced immediately by the sound quality. I Sonicate thus mainly classroom and everyone is stunned surprised what comes out of the little thing.
Battery life is also, for me, very good. The Orbit is 4 to 5 times a week in use, so about 15 minutes each. Have orbit now for about 15 months and have insgesmt times changed 3 batteries.
Through the great sound, the compactness (cable also nicely tucked) and the long battery life has become my constant companion of the orbit.
If I ever wished me what to improve, it would automatically shut off after 5 minutes without signal. One forgets the stop but occasionally.