Ok, I've wondered this for a long time...in general, is it better to use + or - discs? I've used both, depending what's on sale at the time I need them, of various brands, but haven't found any patterns as to compatibility with stand-alone DVD players, reliability, number of coasters, or anything else, but then again, I don't know what else to watch out for.

So, what do you prefer? Is one overall better than the other? How can I tell if what I'm using is good or bad (aside from the obvious of the disc being unreadable/unwriteable)?