I'm currently rocking a 700x28 gatorskin on the back. At my size I seriously doubt the ability of a 25 to hold up under my weight, and frankly how much of a difference whil I notice? LOL
I've been fortunate enough to have someone donate a 105 hub to my cause which I'll have built out with a Deep V and probably straight gauge spokes. This will be my full time wheel, built for strength and longevity.
I'm also likely buying a fully assembled wheel that I can use right away to get through my race right after the wedding and to get through the wheel building process. This wheel comes with high clyde marks from several folks, but not quie the respect the Deep V gets around here. It's also substantially cheaper than the Deep V I'll be having built, so I can get something to use on race day 9/27, and feel more confident than I do on my current wheel.