Look dude, powder is going to be your best bet, like Phil said, the german brand creapure, which is what Biotest uses, as well as ON,(Optimum Nutrition), is excellent and very well priced..the way I go is, if I'm ordering several items, then the shipping is better served, and I will get the Biotest...if I'm running low on just creatine, I will get a bottle of ON or another company that uses the German brand creapure with their own name on it..
As far as the shits, get some fiber in your diet, and then you won't have to "poo,poo" over it.
As has been discussed at length here before, most of the hyped specialty creatines are nothing more than overpriced with other difft. things added to them, to make you think you're getting something better...
It's nonsense, save the effervescent or ethyl esters which will help some with stomach discomfort if they can't handle the grainy mix when it doesn't completely dissolve.
So, waste your money if you want to, but just 100% pure creatine monohydrate is just as good/effective as any thing else out there...German shit like creapure is more desirable IMO...but as long as it's 100% pure creatine monohydrate you can't go wrong.