Throwing only one brand is fine. Not everyone has the money to spend to buy every disc on the market and try it especially now a days with new brands coming out every year. Misprint deals let you try many discs for cheap. Dave Feldberg only uses Innova and is almost 1050 rated, last year the world champion was Eric Mccabe and he only throws Discraft so it's not like you have to throw 4 different brands to be effective at this game. At this point Innova and Discraft have very few holes left in their product lines and the few they do have you can get around. I don't think you should refuse to try a disc from any company (except maybe Quest!
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
) but sticking to the discs you know is for the best.