Your concerns are pretty common. Too many fellas are, IMHO, overly worried about simple carbs. Still... Consider the blunting effect of the other macros on CHO... If you were consuming straight malto/dex, it's one thing, but adding PRO blunts the glycemic response. That said, PWO having the benefit of quick carbs has its benefits. I like oats myself, but oas can have the ability to slow things down (fiber as you say) and it can sit in your gut much longer than a quick carb. On a bulk, the name of the game is having as big an appetite as possible... Not sayin' oats is bad, but in some instances, malto/dex can be better... Yes, better. Even the ISSN recommends glucose, malto and even sucrose in "nutrient timing" but not fructose as much...