Oh yeah, I have the LCT (or LSU), LCVP, Blue Devil but I think that's it. The Revell Firefighter is also a good one to get (19" long!) but I want to kitbash it into a freelance or navy tug.

Yes, these ESC have reverse capability but avoid the ones that say "with brake" as I think there's a built in delay between brake and reverse. Just enter "Brushed ESC" into the search on that aforementioned auction site and you should get many, many hits.