I find these brands to sound fairly similar in presentation with small distinguishing differences from model to model - they aim for flat responses which leads to the "bright" sound some people don't like. Some do. Like me.

Unlike 3db, I've preferred Paradigm more often than PSB, though I owned a few models of each make over the last 8 years or so. Just goes to show you'll have to test them for yourself instead of looking for a consensus, everyone's ears are different. To be honest, at that price, I don't think I'd take either - lots of good speakers out there. Start looking at as many other makes as you can - that's a good chunk of coin so you'll want to make sure you spend it wisely.