project management: 37signals vs. activecollab vs. vbul versions

[honestdave]

So I am looking at the possibility of organizing our teams a bit better for our forum.

I have considered basecamp by 37signals but that would require everybody to leave our site and have to hop over to theirs, which I believe would interrupt the flow of a typical workday a bit.

Also activecollab seems to have a bit of promise, but isn't as polished as 37signals.

here is another site that also looks cool, but is more for sale.

looks like vbulletin has something kinda similar called project tools.

so yea, drop a post if you have any ideas.