I went with the .122 Radio Code (package .153 I think) I've been running it for the last 2 days and battery life is amazing. Believe it or not, signal strength is better than both .132 and .141. I am on VZW and after the install I dialed *228 and did option 2 which updates my roaming capabilities and it has made a world of difference. Only thing I'm not liking but it's no biggie, is BBM messages take a tad bit longer to send for some reason. It's not bad, just not as fast as it was in .132
I would recommend trying the .122 radio code.