"The good: Supercompact; includes Wi-Fi and Bluetooth; removable battery; headphone jack is now standard size; cradle can charge second cell.
The bad: Expensive; lacks a keyboard; small battery; e-mail setup should be easier.
The H4150 isn't an exact clone of its predecessor. For starters, HP has refined the style and placement of the unit's buttons. The five-way navigation pad and the quick-launch controls have swapped shapes; the former is now square, while the latter are circular, and they're better spaced apart. The IR port has moved from the left side, where the voice-recorder button now resides, to the bottom right of the unit. Unlike some handhelds, the H4150 doesn't have a scrollwheel, and the included stylus may be a bit too small for some users."