Here's a ladies' vote for no pleated pants--for women or men, by the way. No one benefits from a bulging balloon just below the waistline.
Heh.
Seriously, don't carry so much stuff in your pockets that this is a concern.
I love shopping for men. One casual look that I enjoy seeing on guys is the retro-style bowling shirts. Admittedly, I really like retro fashions. These are dressy-er than those damn polo shirts and T-shirts, but are still comfortable. Here's a site I've been drooling over for a while:
DaddyO's
Check it out. Can't go wrong there! Yes, you will spend more than $20 for a shirt, but if you are interested in presenting a better than "Lowest Common Denominator" image, you need to be willing to invest in at least a few key pieces.
Oh, and of coure, take care of those key pieces. Invest in dry cleaning and pressing if you don't hand-wash. They'll last a lot longer, and look a lot better.