I like the latch and link 6 point belts. It's simple, can't get clogged up by dirt, and all of the moving pieces are visible. The cam lock ones can have issues with dirt racing if they are not kept clean. I tried a Simpson polyester belt a few years ago and it was way too stiff. I prefer the nylon belts and used a 6 point Impact belt in my modified. The poly belt stretches less in an accident, but they a a pain to adjust and tighten with the stiffer material. On brands, Simpson, Impact, G-Force, all make good products and I'm sure some of the other lower cost and high end ones would also work perfectly fine. Make sure that they are mounted properly and replaced every 2 or 3 years, or after any hard crashes.