In My opinion, IP.Board is the best you can get with forum boards.
--It has TONS of add-ons from the Marketplace, IP.Board also has the best price options I have seen anywhere.
--IP.Board, again, is a really nice, easy to use, stable forum board.
--I am not sure what you mean with freeware or a full paid software, if you are referring to another board, you should probably get a license (paid) to have full technical support, and so your site will not get shut down.
--IP.Board again, (in my opinion) because they have a lot of FREE applications, skins, etc. It is a more widely known Forum Board. It is EXTREMELY EASY to use for Administrators.
--I use IP.Board because it is on almost every forum board I am ever on. It is easy to use, it has GREAT pricing plans (as low as $5 a month!)
--I plan on STAYING with IP.Board because I am accustomed to it and am becoming really good with it.
I appreciate you wanting to buy an IP.Board plan.
Hope it works out well for you!