Well I wouldn't throw in the towel just yet on the VQ and QR engine line-up just yet. Both are relativly new, both are just now starting to have forced induction really attempted on them. It's gonna be hard to get mega big numbers on both with stock bottom ends because of the higher stock compression and that is their major drawback IMO. The SR/VG/RB have a decade headstart in the tuner world and they're still being improved on by the tuner world, so I'd say give it more time and see what the current generation will do (I'm kinda surprised at how fast FI kits are being developed for the VQ)