Well, I had to get greedy. I scored a great deal on a couple of Playstation 2's with the necessary network adapters for installing hard drives. I had an old 80GB drive sitting around (that i don't really trust much, I'll get to that later). So I added HDLoader in with my free MC boot install and went to town. It all went really smoothly, and was easier than getting free MC boot installed to begin with. I installed one game direct from the PS2's DVD drive to the HDD, but it took almost a half hour for the whole game (roughly 1 MB/s).
At that point I discovered WinHIIP, which allows you to hook up the PS2 formatted HDD to your PC (I use a IDE->USB2 adapter). Using my original discs, it copies roughly 3-6 MB/s, which is much better. It can install ISO files much faster (20+ MB/s), so my games which I had backed up to ISO installed much faster. There were a couple compatibility issues in HDLoader, but most games have worked without a hitch. After installing/testing/deleting/etc., I was pretty happy with the result. The 80GB drive I'm using has been through several PC's and a tour in my USB2 case, and I think it's on its last leg, so I picked up a 160GB Western Digital HDD to install. It required some minor modification to the network adapter to make it fit (Maxtor drives are recommended as they shouldn't require any "negotiation"). Using WinHIIP, I backed up all the images off of my old 80GB drive. WinHIIP allowed me to take the WD drive, and out of the box, format it for PS2 and install all the images. It even let me enable 48bit mode to get the patched HDloader to recognize more than 128 GB. I'm really happy with the end result as I can keep my collection of games in their cases, and play them with amazingly shorter load times.

My PS2's, network adapters, New HDD.

Pulling Images off of the 80GB using WinHIIP

Copying Images to the new HDD

Up and running!
Some useful links:
HD Loader Game Compatibility database: http://www.absoluteanime.com/hdloader.html
Installing the HD, lots of other good info/apps including free MC boot tutorials:
http://sksapps.com/index.php?page=installhd.html
HDD compatibility chart (consult before buying/installing HDD): http://ps2drives.x-pec.com/?p=list

