Ok, I think we've had enough of a "trial period" to decide whether or not we like the new Classified Ad system or we prefer the old system.
Here's my thoughts on the new system...
Pros: Fast image upload requiring no resizing and no remote hosting. Categorized listings so you can find exactly what you want without wading through page after page of threads. Ability to set the status of your item listing to sold, etc. Old listings expire automatically. "Price" has it's own field and is displayed prominently in the listing before you even view the full post.
Cons: Separate from the forums. You have to go and seek out classified ads if you really want to shop, they aren't just posted along with other new forum posts for you to see. No search feature (but there's all of about 20 items in the most popular categories). The comments system is sort of hidden. No BBcode.