[rothgar]

Ok, This is just my experience with radio's and verizon. I am in southern California if that makes a difference.

I started with the stock radio and then went to 3.35.04 with DCD 3.0.4 rom and I didn't notice much difference besides I could use GPS if I stood outside in a empty parking lot for 15 minutes.
Then I moved to 3.37.20 with DCD 3.1.2still and had the same results as 3.35.04.
I then flashed with 3.39.10 from the Sprint pre-release and noticed great battery life. Bluetooth connected faster and data/gps seemed about the same. But the battery life nearly doubled what it was before.
I then went to 3.42.02 with DCD 3.1.2 and my battery life went down quite a bit but my GPS lock-on was under 10 minutes and I could lock in a car. Bluetooth seemed about the same as the beta and evdo seemed the same since 3.35.04.
I then put on no2chem 5067 and had almost exactly the same results as with DCD but the phone seemed to respond quicker and wouldn't need restarts as often.
Now I am on no2chem 5069-k with 3.42.02 and battery life is worse than before. My BT doesn't always connect when I answer a call, and EVDO/GPS are the same. I also seem to have significantly less signal with this rom/radio and just today I my phone was rining but I couldn't answer because it said my signal was not strong enough from my office where I have tested every other rom/radio and they all worked.
I plan on moving to 3.42.30 as soon as no2chem 5070 comes out.

So far though the best combination I have tried is 3.39.10 and no2chem 50067.

BTW Battery was my biggest complaint and even with no2chem 5069 and radio 3.42.02 (the worst of all the custom rom combinations so far) I still get significantly better battery than I did with a stock rom.