Jeff_92S4

Right now I have the option to use either MRC or Lehman RS2 software. I did some searching and found some old posts, and it seemed the general consensus was that Lehman was the older, more "trusted" software, and MRC was newer. However, it sounds like both are good choices. Any more current opinions? Specifically, would one be better suited for a turbo that is bigger than RS2? Also, I currently have a Bosch 3-bar MAP, would it be worth it to switch to a VMAP-D if I'm staying at 3 bar?