Summary: I have both the HP 10bII+ and the TI BAII Plus. I like the operation (number and order of button strokes) on the HP better than the TI. I also prefer the arrangement of the keys with the primary financial TMV functions across the top. Between the two, this one is easier to learn how to use quickly.
Summary: If you're like me, and get into a zone punching numbers in, you're going to be let-down. It will freeze on you and put jumbled numbers on the display. It happens at least once a day. And the "punch" sound is kind of like a clicking noise, which probably drives my co-workers slightly insane.