I've tried both ways (high GI and low GI pwo) and have found better results with high GI.
I'm usually a late trainer myself and the high GI method only supports my gains.
So, I'm thinking a concoction of maltx, protein (whey), skim, egg whites, and quick oats blended in a shake may be the PW drink of champs???????? Add some creatine and glut......
I'd not bother w/the other additions to the dex/isolate myself, being that I have my solid food meal of carbs/protein about 1.5 hours after my initial pwo shake.
I can get my shake down in 5 minutes, but I know put ice in it to slow me down a tad.....no way I could eat 1/2 hour later.....1 hr is a struggle...........more like 1.5........