honestly after messing with the radio in WM (everyone claiming better results with the bell radio .45, so I had to try it), and not noticing any favorable differences, I ended up back with my factory vzw 3.37.78 radio, which "seems" to work the best for me, yet like I said, almost no difference was noted.
That being said, android "should" not be any different in terms of radio.. as I'm still on the same vzw radio with great gps results running android.
NAND with mssmison's 2.1 build (currently)
xv6900 from verizon (vogue)
** same results with other builds as well
edit: I did not seem to find any negatives to the "upgraded" radio either.. so it doesn't hurt to try, but don't expect the world, as it might not change anything
You're on sprint so you do not need to worry about the aGPS fix either, that's only for vzw vogues