If you are looking to get into dropshipping, then be prepared to do a lot of research. Yes, there are good dropshippers out there, but they are few and far between. The number one thing to look for is RELIABILITY, as your entire business success rests on how good your supplier is with inventory and problem-free shipping.
Another thing to consider is focusing on a good niche. A guy I know is doing well focusing solely on Playstation games. Another does jewelry. Don't try to be all things to all people.