Wikispaces vs. pbwiki

Being a newbie to the world of wikis, I find them very interesting. For the group project this week, my partners and I had VERY different work schedules. It was difficult for us to find time to meet and chat, however our wiki made this much easier. We each were able to take a section of the project, work on it when our schedule allowed, and still create a great final product.

Both wikispaces and pbwiki are very easy to use and they seem pretty similar. I noticed in wikispaces a few things that I didn't see in pbwiki- but of course I could have overlooked them.

Wikispaces has:
-ads unless you pay which is usually the case with anything that is free
-usage stats like Google Analytics
-you can import a blog
-export as HTML
-have access to backup space
-more template options

I like the look of wikispaces better than pbwiki but as far as function- they seem to be equal.