I was running EC09 for what seemed like forever. Then after 9/2 I started having 3g problems. Just yesterday I had my phone sitting next to me and all of a sudden my 3g dropped altogether. I did a battery pull, tried *228, wiped data, wiped cache/ dalvik. Nothing would fix it. So I used Odin and went back to a stock Rom, and then went back to root and installed MIUI again. This time I have been using EB01 radio with no 3g issues at all. It has been running really smooth.