If you're not too girthy, I hear these are fantastically thin and stimulating. I find them fantastically uncomfortable.

 
If you're looking to seriously size condoms, look no further than www.condom-sizes.org/condom-size-chart/condom-size-chart

This chart has most of the major brands as well as how to measure yourself and find what will fit. I was recommended the SKYN polyisoprene condoms (http://www.condomdepot.com/lifestyles-skyn-large) by someone on this board and haven't used anything else since. They also have a thinner verity called 'Skyn Elite' that are 20% thinner if you're able to fit into a 51mm width.

 
All that said, polyisoprene is a better material for condoms in general. It's stronger (so they can make them thinner), it transfers heat better, and it doesn't have an unpleasant smell/taste like latex does.