Joe, if your asking which tranny is overall better, the 2h or 4k, I would go with the 4k since the velocity sport tuning "shim kit" can't be fitted to the 2h.... Personally I like the more robust 16v transaxel for a 2.0L 16v conversion, with a 3.89 final drive and a .71 5th gear.
HTH's
David