I've first purchased one stylus in Apple store, than I bought another small one from mintinthebox, but those were nothing special.
This one was really the best. It sits in the hand so great, its high enough and heavy enough so you can really feel what you're doing.
The pen is also working nicely.
I think this is the best solution for iPad users. The size should not be a problem since iPad already is quite big.
I love it,