I discovered a big problem with Performance Ultra bib shorts
They're just so dang comfortable now I don't want to use any of my other 3 pairs of bike shorts or other bibs! Seriously these are the most comfortable bike shorts/bibs I've ever tried. My Nashbar Mansfield II long bib tights are a close second in terms of chamois comfort, but I can't wear those above around 50 degrees or so.
My commute is long, 31 miles round trip, so I prefer bike-specific kit. I've used the Performance Ultra bib shorts for everything from a 15 mile ride each way commute, up to 56 miles on a Saturday ride a couple of weeks ago. I wish I could afford to get 2-3 more pairs of these things.