You will love vBulletin once you get used to it. VB is scalable to handle tons of traffic, excellent admin control panel, has all the essential bells and whistles (if admin will allow them), and good security. I used to have a very small site using VB. Excellent support group also.
2005 Trillium Outback w/ 30" tongue extension
1989 Award 730, 30'
2003 PT Cruiser
1998 K2500 Chevy Silverado 6.5 Turbo Diesel, 4X4, ext cab, short bed