For a guitar? Not limited to PRS specifically, but what feature on a guitar just makes you say... NOPE! I've been trying to answer this question myself, but keep finding there will be one exception to the deal breaker rule. For example... I don't like trems. Don't own a trem equipped guitar. Yet I want one trem guitar. A swamp ash NF or NF3. Or single coils...yet I'd like a soapy of some sort. Even saying it HAS to be PRS(which I'm all in less my current acoustic) - and I could see owning a tele at some point. I guess I'll go with neon color for now. If it's any shade of a highlighter marker - I'm out. So what is it? A color, neck shape, pickup config, trem, stoptail?