I'm looking at buying a new Apple and would like to get good quality external speakers for it, and not break the bank. My old system has a harmonkarden w/ subwoofer - they were nothing special but seemed to get the job done, but that was 5-6 years ago. Anyone have some suggestions? I'm assuming I'd need a system w/ a subwoofer, as I'd like to not skimp on the bass sound. After all, that's the best part right? I've seen listings by Klipsch, JBL (creature speakers), and HarmonKarden. Many start around $100 - with others upwards of $250+. Thanks.