I also will be drinking the Mac-Kool-Aid. I have been in the PC for years, I am tired of all this windows "Crap". I am kind of waiting on the new iMac. and also wondering on getting a Mac-Pro. I would like to get into some basic video editing(final-cut express). anybody have comments? the price point of a Mac-Pro compared to the Imac is some descent $$$
I'm in the precise scenario you are in...i have a crappy Dell computer and have had it for years. I used to be a video editor for a local news station (albeit, way back then we edited on these things called tapes)
A friend of mine is still a video editor and is now doing client work at a post production house...he runs a mac pro. I spoke with him about it and also talked at length to the apple folks...my take away was this...unless you're doing some heavy duty video editing, (graphic rendering, movie projects, client work, etc) the imac should do just fine in either the 2 gig or 4 gig configuration.
With that in mind, I made the executive decision to go iMac, both are iMac and Mac Pro are wonderful machines and i actually reeeeally wanted the mac pro but in the end i know that i'm not going to be pushing 4 - 8 cores with my little video projects.
I'm no expert, but this is my thinking on the matter after doing a ton of research...hope it helps.