[supremeefi]

If you're going to drive it then the Accel, it has the most extensive maps that relate to good drivability. If you want extensive datalogging etc. I'd do the BS3.
The FAST EZ stuff has it's applications as well but don't underestimate being able to control spark, especially where you live. More spark when it's cold will allow it to drive much better. Also the ability for individual cylinder trim, and you don't necessarily need a dyno to utilize that feature.

The EZ systems don't have spark control and run a bit richer to try to deliver comparable drivability vs a sequential system like the Accel or XFI with full tunability. But imo the EZ stuff is no match for a well tuned sequential system on an IR type intake.