Give him a break, he does good work and is constantly trying to upgrade and bring out better products for us to have a go with at a cheaper price.
At the end of the day the job is yours to pick what turbo you want to buy either it be hypergears or garett or whatever else. I dont understand what the problem is, Stao provides dyno results of all hes turbos and everyone has access to dyno results to the other turbos on the market so go look at them yourself and whatever you feel is better for go with that. Theres no need to always try to argue the fact here putting the work he does down. As I said before everyone decides for themselves what they want.