your burned DVDs to the store and tell the salesperson you want to try before you buy.
Other than that,here's a list of players with their features and reviews you can go through.
http://www.videohelp.com/dvdplayers
I've got a dvd burner I am using to burn Backups of some of my stuff, as well as family video's. However most of my burned DVD's don't play in my player, but will in my neighbors. So I figure I'm off to get a new Player. Which ones will do a good job reading burns?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic