Personally I use and recommend Link ecu's, and most of my customer builds use them. Ive tuned all sorts of engines with them and they just work with so little drama, yet have all the capability in the world if you need it, especially the latest release which has 1000hz logging and user defined math calculation ability. I've used quite a few other brands but keep going back to Link for all their support and how well they work. Its really down to personal preference.