"I play mostly acoustic styles...if i had to relate it to something, it would probably be a cross between jason mraz and dave matthews. There are vocals and acoustic instruments, and my budget is probably on the lower end but still trying to squeeze good quality out of it."
MacRumors.com has a "digital audio" sub-forum and you would probably do well to browse around there. You might also check the forums at gearslutz.com and homerecording.com.
Important question:
How much are you willing to spend to get good sound?
Better figure on at least $400 for an interface and one or two decent mics, mic stands, cables, etc.
Since you have a MacBook Pro, I would STRONGLY suggest that you buy ONLY interfaces that have firewire for their connection scheme. Firewire has always been superior to USB when it comes to audio processing.
I'm currently using an Echo AudioFire8 interface -- it's solid and clean. These are no longer in production, but I would suggest you check around for the Echo "AudioFire4" -- very similar with a few less inputs, and very affordable @ about $300 "street". You might be able to find one used on ebay for less.
Mics are a whole world unto themselves. You can try this page for some comparisons:
http://www.vocalimpactmedia.com/SoundStorage.html#MCASP1stock
For recording guitar, you'll probably want TWO mics for a wider field of sound. A pair of the same will be useful in the future.
For digital recording software, you can start out with GarageBand. It may be all you need for a while. When it's time for "more power", I'd suggest one of the Cubase products -- "Cubase Essentials" would be a good one. I know I'm in the minority in this forum, but Cubase beats the pants off Logic insofar as ease-of-use and ease-of-learning goes, and has SUPERIOR audio editing functions.
One other thing -- you may find that when using digital audio software, you just don't have enough "screen space" with which to work. In that case, you may need to consider adding an external monitor, too!