RE: differences of sb v2 and sbv2 pro
ZEPAHR123: You can see the differences by clicking these 2 links. It would cost you a lot of $$ if you wanted to upgrade the v2 to the v2 pro model.
http://www.modelrec.com/search/product-view.asp?ID=6451
http://www.modelrec.com/search/product-view.asp?ID=7743
Hope this helps!!!