Being an owner of the original Mini, I'm quite impressed by the upgrades the new Mini offers. In particular, I like:
- The choice between Core Solo and Core Duo processors, and how the Solo is still about 2x faster than the original Mini's G4 processor.
- The 4 USB ports instead of only 2. I spent an extra $69 CDN for a USB hub that I wouldn't have had to buy if I'd had 4 ports in the first place!
- 2GB max. RAM up from 1GB (and 2 RAM slots instead of just one).
- Audio in jack, as opposed to not having it on mine! Buying an iMic ($49 CDN) is my only way to input instruments for use with GarageBand.
- Front Row.
And now my beefs: First, I don't like is how video RAM is now shared with main memory. The original Mini had 32MB dedicated RAM - although small, at least it doesn't interfere with main RAM operation. In any case, the new Mini should have at least 64MB dedicated RAM instead of being shared.
I've also noticed a discrepancy with hard drive speed. When looking at the Mini tech specs page on Apple's web site, the speed of all drives are listed at 5,400 RPM. However in the Apple Store, when I click on one of the two Mini choices then select "Learn more" about the hard drives, it states that "All Mac mini models include standard Serial ATA hard drives featuring data transfers up to 1.5 Gigabits per second. All hard drives run at 7,200 revolutions per minute (rpm)." That said, I haven't felt like I've been in the stone age with my 5,400 RPM drive. My Mini runs quite smoothly with its 1GB of RAM, and RAM is definitely the more important factor with Minis.
Overall, however, I'm envious of the new Minis. It seems like you're definitely getting more bang for your buck. However, I'm not envious enough to consider the upgrade until another year or two (when I'm sure I can install Windows in order to play some of my favorite PC games). Frankly, the new iMacs are so loaded and powerful in comparison for not much more, it might be worth getting the iMac instead - unless, of course, you don't like the idea of an integrated monitor. At least with the Mini I can easily replace my monitor when it fries.
Well, there's my 2 cents worth on the new Mini!