EFI options

Still gathering parts for a 470 ci (400 with ground 440 crank) and single T6 and wondering what's the best bet for and EFI setup? I already have a BG 750 blowthrough but the more I read the more I am being told to go straight to EFI. Is the Holley Sniper or Terminator that much better than a blowthrough? Or are there better systems? Looking for best bang for the buck but I am new to turbo's so looking for as much ease in tuning as possible. Thanks!