Best GPS and bluetooth modules

Hey guys, I am making a quadrotor right now and and hoping on setting up GPS navigation and bluetooth serial communication between it and the computer. I was wondering what you think are the best modules for doing so...?

Currently, I am looking at the XBee 50mW module, which has a range of 1600m, but I really don't know much about this stuff, so any suggestions would be helpful. Thanks

For the ultimate in light weight, you might want to look at one of these TTL bluetooth modules:

http://cgi.ebay.co.uk/Bluetooth-Wireless-TTL-Transceiver-Module-5V-GND-TX-RX-/380263769121?pt=LH_DefaultDomain_0&hash=item58897ca421#ht_2327wt_1242

I bought two, but have not had chance to try them yet. But if they do what they say on the datasheets, they are easy to interface to.