I've been having a lot of fun recording my songs in GarageBand, but I've been using the mics on my MBP and on my Logitech headset, both of which leave a lot to be desired. I did some searching on Amazon for mics and came up with a really mixed bag of reviews on most of them. I figure this must be a topic that comes up a lot in this forum, so I'm sorry if it's akin to the "which camera should I buy" threads over in the Digital Photography forum. I'm hoping there is a mic that really stands out as recommendable for the enthusiast who is recording vocals and acoustic instruments. I don't want to pay more than $100 for the mic, by the way.