My Fiance and I have only dabbled with Trojans....been active for nearly two years and had maybe a total of three break....to which I attribute to our own stupidity.
I've used trojan and durex, been very rough with both and never had a problem. I even have a penis piercing so I've got steel down there rubbing on the condom, and not had any breakages at all.
I prefer trojan, but that's just personal preference.
I've had nothing but bad luck with Trojans. Durex seem to hold up better but to be honest I've never had a condom that wouldn't break if I didn't change it at least once or twice an hour. I'm only average in size so it has nothing to do with me physically. The best thing I can suggest is to just change them regularly, it's not worth the risk.
I say Durex as well, its definately my favorite... though their seni-thin split on me once, only because I was dogging and slid out and jarred myself on her pubic bone and thats went the condom broke, on the outside.
best condoms? 
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