My experience is that the aggression factor increases at 5-10. There are still bad players at 5-10 but the ratio decreases slightly. This is the tip of the iceburg when it comes to varying your play. You need to mix it up...once in a while, don't over do it. It also is the point in limit where you really start playing poker..meaning playing the players rather than strictly playing ABC which wins at 3-6 and below. Its more fun and more challenging. Play your solid game 90% of the time, look for an oppurtunity to throw a tricky play in now and again to throw your observant opponents off.