You guys flatter me with your compliments. I see that my 6.1 roms still ring true
I have a version 1.6 out, but it should be noted that the battery life is most likely the best on 1.4.1.
1.6 is the fastest, and has a newer 1% battery driver.
1.5 has a 1% battery driver.
1.4.1 has the 20% battery driver.