arduino gps

I'm trying to make a board arduino-based with an on-board GPS. I follow this module to create the gps section

http://www.cooking-hacks.com/index.php/gps-module-for-arduino.html

and i was thinking to use the Vincotech A1080-B.

Unluckly i figure out the it's really hard to buy because (only Vincotech i mean) because it's not produced anymore.

Which other module can i follow?

i need: - it follow NMEA standard - have ext antenna (not integrated) - it's compatible with the libraries of the module i link on top.

Luca

PS: sorry, for my english