I'm looking to buy a PDA, having not bought one before, I'm rather clueless when it comes to them. Things I definitely want are WiFi, Bluetooth to link with my phone and a decent screen. The main one I've been looking at is a Palm TX, it looks like it has good phone features (provided you use the right phone). Is this a good choice? I quite like the look of the Dell Axim x51 series, but the v is too expensive, how do the other 2 models compare? What about HP? I'm open to other suggestions, but I'm don't want to spend too much on it.