For me the primary advantage of getting a stick was the ability to use it across multiple platforms. I wanted to be able to move between my wii (SC2) at home, and the Playstations used for tournaments without having to worry about getting use to a new controller. Being a pad player for my entire gaming life, the stick took a lot of getting used to, and truth be told, I never truly adapted to it. I felt like I had at one point, and then I picked up a gaming pad after my stick broke and it felt like going home again.
That being said, I have been looking @ the new SCV sticks, but a) They are expensive for a casual purchase, b) considering my past experience I don't know how beneficial they will be to me, and c) the branded SCV sticks don't work multi-platform. I have an xbox 360 now, and if I get a stick it needs to work across platforms so that I can take it to tournaments, which are always played on the ps3.