Motorola E815 / E816 Hollywood

I have a V710 and was wondering if an upgrade to an E815 would allow the automatic uploading of the phonebookon a Lexus or Toyota? Aside from the loss of the Analog band, does anyone have a good reason not to upgrade to the E815 if the upgrade is free? I have an older V710 subject to the class action upgrade and I just got a second V710 still within the 15 day period just when the E815 came out.