Trepfan, I have to strongly disagree.
Lions10, I would suggest you get on the best travel team that will give you the role you are looking for.
(Meaning, it does no good to join a premier team if you're not going to play.)
These travel teams are stronger than your high school teams. They attract scouts (college and pro) that your high school team will not attract, even if you're both at the same events. You can benefit from being on the same team with a stud or two or four. Scouts may turn out to see them, and "discover" you in the process. Or who knows, maybe you're the stud everyone's looking for? Be where you can be found easily.
There are teams that abuse pitchers. You need to investigate whether this is an issue on a team you're considering and either steer clear or have a heart-to-heart with the coaches about it up front. You and your parents have to put your foot down on that kind of thing. But that's not a reason to avoid all travel teams.
Also, check out where these teams are planning to go. Some teams will go to college-specific showcases at schools you have no interest in. Think about where you want to be and make sure the team you're looking at will get you there.
As for the Orioleanders, they are a highly reputable team and they are run by an Orioles area scout. There's nothing to lose and a lot to gain from attending the tryout. Go there and see for yourself what it's about. Ask a lot of questions, and get to the point of things that are important to you so you know whether it's what you want.