Got these pedals as upgrades to the flats that came with my boys mountain bikes. They're great entry level pedals that are definitely a step up from the stock pedals. The replaceable studs have given my kids more confidence that their feet will stay on the pedals even when it's a little wet or muddy out. The composite body has held up well so far and the bearings continue to spin smoothly.
I installed this on my Next SL crank and upgraded to the Sram XO1. I've put about 200 miles on the set up over some very technical terrain. I've not once had the chain come off. It's also very quiet even on the largest or smallest cog. As usual, BTD had the best price and shipped it out fast.
I use these on my 29er, mainly on maintained trails, but the occasional terrain park. Really nice solid pedals. I am 260lb, and there is no flex or creak. Bearings are smooth, and the spikes are very aggressive, to the point that it takes an attempt or two to position your foot correctly - There is no foot movement once your foot is placed. There is also little to no chance of ever slipping off.