The Treo 755p is the latest Treo smartphone from Palm and the first new model released in 2007. The 755p essentially combines the software and features of the Treo 700p with the slimmer, antenna-less 680/750 form-factor. The 755p aims to take its place as the new flagship Palm OS Treo, sporting 3G wireless speeds with a lighter form factor and more attractive case design. It premiers first on the Sprint Network in the US, with Verizon expected to eventually offer it as well.

The Palm Treo 755p sports a more compact design than the 700p and is available in two attractive colors. The Palm smart phone has integrated Bluetooth, a 1.3 megapixel camera, and EV-DO support, and it adds an instant-messaging app, Google Maps for Mobile, and direct push technology. It’s a good performer too.

While the Palm OS is undoubtedly the easiest to use, it’s getting outdated due to the lack of support for multitasking. I find it annoying trying to download a big email attachment and not be able to use another application or quickly surf the web. Then again, the power of Palm OS is to keep things simple and eliminate the need to press a bunch of keys or stylus taps to get to where you want to go. And yes, unlike Windows Mobile, the responsiveness and performance doesn’t degrade over time.

Straight out of the box, the Treo 755p syncs with Mac (via iSync or Palm Desktop) and PCs (with Palm Desktop or Microsoft Outlook). However, Mac owners cannot use it as a modem on Sprint’s EV-DO network. Why? Mac users must connect using Bluetooth, which drastically slows down to about 250 to 400 Kbps versus 800 to 1,100 Kbps when hooked up to a PC using Sprint’s Connection Manager. Palm recognizes this issue with the Treo’s Bluetooth 1.2 stack, which is too slow to take advantage of the EV-DO speed. I find that his is adequate speed for casual surfing, instant messaging and checking emails.