I know the question comes up from time to time about which sliders to get... I crashed a while back and put a hole in my clutch cover. The frame sliders I had did their job protecting the tank & frame, but the clutch cover had a hole in it. After replacing it I decided a little protection was in order, so I added R&G case sliders, seen here
. What I didn't realize at the time is that those sliders reduce your max lean angle and become the first thing to touch the ground - as opposed to the footpegs being the first. Here is a video of me learning this new info:
Summary - R&G case sliders (the small ones at the bottom edge of the engine case) will help you crash, then protect your bike while it's sliding!