Run the 1.10 A/R rear if you want it snappy........... for a 1300bhp capable turbo its just fucking awesome, nothing comes close to it.
You can see in all the video I listed this works at low boost and makes stupid power and the PFC log screen even in quick transients 2nd and 3rd its 'responsive' it is the ultimate turbo. (remember the one I told you is better than in these videos).