I've used them, I like the deep diving 800 and 600 series for trolling as they have an awesome wobble. Color depends on water conditions, sky conditions, and matching the local food source.
I'm far from a pro but I've always liked the more shiny crankbaits, especially for sunny days and places with shiny baitfish.
I found a site that is offloading their Reef Runner inventory at $6.22 each, and I picked up several for my tackle box. Some of the colors I'm excited to try are purple tiger, xtreme chrome, gold eriedescent, white perch, pearl ghost. Here is the site