I'm going to be starting a new job next month and with it get a HUGE hike in salary so am going to treat myself when I start to a spanking new 20" iMac! (nice jump from PPC Mini). I already have some cruddy speakers but wondered what are the inbuilt iMac speakers are like. Don't need to massive loud just decentish. If there crud what would you suggest as a set of good "cheapish" speakers.