I went back and forth on a lot of pegs before I finally purchased these. Overall I'm pretty happy with them, as they are leaps and bounds better than stock CRF pegs.
Positives: minimalist design, seem very strong, good cleats with good grip yet aren't harsh and don't tear up the soles on my Gaernes, vast improvement in comfort and control, work very well with the stock hardware, love the size and slight curve of the platform
Negatives: camber adjust ability might be helpful for some riders, right peg hits brake pedal at the pivot area when folded-this might not be a big deal but if you were to lay the bike down on the right side at high speed it might do more damage than just to the peg itself
Other than that I can't comment on the durability as I haven't had them long. Also I won't comment on the weight compared to stock, because the difference whatever it may be does not matter to a rider such as myself.
My overall rating is 2 stars because I think they should be open about 17-4 steel rusting. Wiki says: SAE type 630 stainless steel (more commonly known as 17-4; also known as UNS 17400) is a grade of martensitic precipitation-hardened stainless steel (magnetic). It contains approximately 15–17.5% (17) chromium and 3–5% (4) nickel, as well as 3–5% copper. So if my pegs hadn't rusted after the first trip and only after less than 300 miles... I would have given them 5 stars. The comfort is great, the grip is awesome, the distribution is great. If you don't mind rusty pegs, go for it.