Ill preface this by saying this: I'm not looking to argue or debate the point, but these are a summary of my findings after many years of researching this topic (summary only, cos the research is too much to assplain in a single post or two or three or four!)
Best looking: eightstack.
Best performing (street): twm
Best performing (track): kinsler, but there are others also.
Most knowledgable group on this topic I found were: EfiHardware (Mitcham, Vic)
Best ecu: MoTec
Not a fan of the self tuning ecu systems.
They can cause more headaches than the problems they solve.
YMMV!
Now FWIW: after all this research, my multipurpose performance street engine is being built with carbs - 2x4 tunnel wedge. I can't tell you how it compares, I'm yet to test it. But I trust my engine builder
Good luck with your build.
Edit:
Ill qualify my comments by saying that this is my findings for FE engines.
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