about to get some new wheels for my '03 2500. Any particular brand or design to stay away from?

 

Just make sure it's the correct 8 lug pattern and hubcentric if you can get it.

 

Likely they won't be hubcentric, mostly because that bolt pattern fits a bunch of different trucks...check into hubcentric rings that will make them fit the hub.

If you are in the rust belt, be aware that most (all?) aftermarket rims aren't going to put up with many salt/brine seasons. I usually go with newer factory wheels. I put 2014 20" rims on my 2004. The offest is a little more positive than I'd like, but probably better for the wheel bearings and less stuff thrown up on the side of the truck.