nl5350 datasheet

I'm starting a project of designing a GPS module. What's the best single IC soultion for GPS? There are some of them in the market and they are very new, such as TI NL5350, MAX2769, STA2056, EPSON S4e19863_e. Any ideas which one is the best? Any tech info available? Thanks.
Also attached some datasheets FYI.

MAX2769 is NOT a single chip GPS solution! And it's NOT easy to get the datasheet of NL5350, S4e19863&STA2056.

I would go with ublox. Part UBX-G5010 GPS. We used them in a military application. The performance is much better than the spec.

I attached a link to ublox single chip solution. Check it out. You wont be disappointed.

http://www.ublox.com/en/gps-chips/st...ubx-g5010.html