If you've already got stainless steel lines, then I recommend Vesrah pads. They are simply fabulous. Yes, they are a few bucks more expensive (usually about $10-20 for two pairs of fronts) but they are worth the price.
EBC have strong initial bite but they have no feel, they fade horribly, and they squeak loudly, especially during/after a session out on the track.
Vesrah have slightly less initial bite, but you can feel exactly what is going on with your front tire, they don't fade, and they don't squeak after a session.
Those are the only two aftermarket pads I have experience with, but I think I'm hooked on Vesrah for life.
Vesrah RJL's or SRJL's are my favorite so far. I like the brakes to bite quick and with little effort. I've also tried SBK3's & DP's sport ++. Hated the SBK3's. Get a pad that is HH rated as this is the highest friction rating.