Support is important both before and after your purchase. The majority of supercharged M3s out there are equipped with ESS, it's well documented on this forum and others.
Here's a thread that lists the top Supercharged 60-130 times:
E9X Supercharged M3's
5.95 - VT3M33 / E92 M3 DCT / ESS VT4 800 - Built Motor / 97 octane / 3 shifts
6.14 - DLSJ5 / E92 M3 DCT / ESS VT750 SC - Built Motor / 100 Octane / 3 shifts
6.16 - Madsex343 /E92 M3 DCT / ESS VT600 / 94 octane / 3 shifts
6.23 - Mikewads / E92 M3 DCT / ESS VT600 SC, 100shot Nitrous 3rd on/93oct/3 shifts
6.36 - Gpower / E92 M3 6-MT / Gpower SKIII SC - Built Motor / 1 shift
6.46 - M&M / E92 M3 DCT / ESS VT625 / Raised Rev Limiter / 94 Octane/ WM / 3 shifts
6.56 - Tom@EAS / E92 M3 DCT / VF620 SC / 91/100 mix / 2 shifts
6.57 - Evolve - Lost Marine / DCT E92 M3 / Evolve E625 SC / 93 Octane/Catless / 3 Shifts
6.75 - IMG / E90 M3 6-MT / ESS VT725 SC- Built Motor / 93 octane / 1 shift
6.78 - Mikewads / E92 M3 DCT / ESS VT600 SC / 93 octane / 3 shifts
6.80 - DLSJ5 / E92 M3 DCT / ESS VT625 SC / 95 octane / WM / 3 shifts
6.96 - Tightie / E92 M3 6-MT / Gintani Stage 3 SC - Built Motor / 91 octane / WM / 2 shifts
6.98 - M33 / E92 M3 DCT/ ESS VT650 SC / 93 octane/ WM / 3 shifts
7.06 - DLSJ5 / E92 M3 DCT / Gintani Stage 2 SC / 91 octane / WM / 3 shifts
7.52 - IMG / E90 M3 6-MT / ESS VT625 SC / 93 octane / 2 shifts
7.58 - Pencilgeek / E92 M3 6-MT / R46 Stroker ESS VT600 SC / 3.15 gears / 100 octane / 1 shift
8.31 - biglare / E90 M3 DCT / ESS VT575 SC / 3.62 Gears / 91 Octane / 2 shifts
8.95 - sammyrusso / E92 M3 DCT / Gintani Stage 1 SC / 91 Octane / 3 shifts
9.00 - EugeneTawain / E92 M3 6-MT / Gpower SKII SC / 91 Octane / 2shifts
M3POST's official 60-130 and 1/4 mile thread
http://www.m3post.com/forums/showthread.php?t=630463
Hope this helps!
