500 miles on 27x1-1/4 Conti Gatorskins: 5 flats (1 foreign object puncture, 2 from my cheap rim tape and 2 pinch flats)
200 miles on 700x28 Bontrager Race Lite Hardcases: 1 flat: roofing nail. this should've been riddled with pinch flats based the distance between hitting the tire and stopping (probably at least a mile because the only place any construction occured was at least a mile from my apt complex and I didn't notice the flat till I got home.)

I keep both sets at near as i can figure it the perfect pressure, so my conclusion is that cheap rims and bad rim tape are probably more grief than midrange tires (my pinch flats occured on the exact 2 days I was too lazy to check mytire pressure)