You really don't have a whole lot of choice with the mac, but like I said, Final cut is some of the dopest schyt that's out there. They shot the movie "300" with Final cut pro, but I HIGHLY suggest trying out the smaller versions if it's easily accessible.Of course, the Pro version and a $3000+ camera "can" give you great results, but your going to learn how to use a camera with a few buttons, and software with a few options a lot faster. Avid liquid is more for the PC, but it's the PC's version of Final Cut Pro. Either programs are heavy! Personally, I use Sony Vegas 8.0 and it's simple to use. I'm no pro as I've only used it a few times, but I was able to learn it without a manual and did my first scratch video the day after I had the software with no help from anyone. I had downloaded Avid Liquid because people were telling me it's "the best" program and I can tell you two things that happened. One, it was KILLING my CPU..my computer was struggling, and secondly, i was completely lost. Beside loading it up, the software served me no purpose and I had the lite version (pinnacle studio ultimate).. there was a huge difference.
Check out the video below, my boy Lancescape produced the beat. The video was shot with a cheap regular home camcorder.
http://www.youtube.com/watch?v=Dn84_0EqGp4