aftermarket management Been hearing quite abit now that omex is quite old tech now and me221 is a better option. A lot of the big name nms for one still swear by omex. Me221 is slightly cheaper option I believe as well.
stu-msd rates me221 also

 

Time old response of ask who is doing your mapping which they prefer.

 

neither
I agree, ask your tuner what he prefers, myself I prefer DTA much more easy to understand in the manuals