In my other truck I had the SIMPSON camlocks-They were defenietly convenient,but they didn't like sand or dirt in them. They always locked fine,they never came out.The release lever would just gall up and get stuck on the detent in the lever,some whiye lithium grease seemed to keep them working O.K.
I'm just ordered new seat for my truck and am getting some belts (camlock)I"ll pass on theSIMPSONS but any info on other brand would be great