well the hp+ are a little better pad. the stoptechs are less noisy and dusty but dont have as much initial bite. however, they are much better than the hps'.
im not sure exactly... does your sf have disks or drums?
Eek, nm lol. Thought I would ask for all the sf owners here. Oh well.it would be a lot more then $200ish for you. i believe youd have to swap rear hubs for a new model's.