Join Date: Jun 2004
Location: Northern Nevada
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I wouldn't worry as much about the specific make and model of rim as about the spoke count. I'm about 50 pounds lighter than you now, but I've been as high as 275, and I've had problems whenever I've tried to use fewer than 36 spokes. Quality of assembly is also important--a well built and properly tensioned wheel is a lot stronger than one that was just thrown together. And you'd never go wrong steering AROUND potholes rather than plowing through them.
I assume you've thought about "truing" the wheel, which is what we serious cyclists call it when we straighten one. It's learnable but tricky at first--it's worth taking it to a shop to ask if it can be trued rather than replaced, because they probably won't charge more than $12 or $15 to do it.
Having said that, if you DO replace, the Sun Rhyno Light is a good choice. I have one on the rear of my Atlantis, and it's pretty stout. Velocity Deep V is another good one.