We have found that in comparison to a Megasquirt, pound for pound the DTA S60 is very cost effective...

Phil @ Extraefi builds a relly good unit but for ease of learning mapping from scratch I'd go DTA every time...S60 can do COP, MAP, TPS, Launch, ALS, Flatshift and Closed Loop, with an external controller...

DTA also has a fabulous Oscillation function that lets to decode whatever trigger wheel you are using....

T6 is very very good, difficult to configure in someways for a novice....never used a T2...