Buying is very easy, selling is harder. Be patient and avoid others telling you what to like. Don't catch Audionervosa syndrome. If you like something that others don't, who cares, go with what you like. Now get out there and do some listening. It's the only way to know what you want. If you are a headbanger we can all suggest powerful gear. If OTOH, you listen to classical music at low levels then perhaps you are an SET person. There are obviuosly many intermediate types. For example I like powerful tube sound that doesn't imitate solid state gear.