it depends on what you want to use it for. If you plan to run with it only then a fixed front wheel is better - better control and less likely to go somewhere with out you. If you want to use it as a regular stroller then swivel wheel is great for getting around in crowded spaces. If you want to do both, make sure the swivel wheel can lock. The "best" out there are the BOB strollers - start research there and move down to a price point you can manage. Also, Craig's List and eBay are great ways to buy used ones for far less then new.
Hope that helps and good luck.
at 3:06 PM on Feb. 9, 2009