Immediately post workout I take 10g 4:1:1 BCAA's + 15g Pepto-Pro + 3g creatine + 1g beta-alanine + 2g citrulline malate (with stevia to sweeten). 30 minutes after that I either have a larger and slower digesting protein/carb/fat shake or an actual meal depending on my schedule for that day.
This is a very nice protocol you got. OP, this is good idea if you wanna try something really different.
As for a post workout protein shake... i'd say try MAP post workout(max absorbed protein) followed by a whole a whole food meal
OR plain and simple use any quality Whey
ISOLATE based shake.
Quality companies i would/do use are syntrax-Nectar, truscience- isolate and iso-ology, optimum nutrition- 100% natural whey, and NutraPlanet- NutraPro just to name a few. I prefer stevia sweetened ( MAP and Optimum natty whey) over sucralose sweetened proteins.
What I am currently using is Genomyx Protocol V2 immediately post workout (to optimize recovery and protein anabolism) and 15 minutes later I drink a shake of Optimum's natty whey with some simple carbs (usually equal amounts of both).