Sure, track dropouts are the best and cleanest, but finding them isn't the easiest. Just presenting options.Yeah. Personally I'd rather put in the time to find a frame with horizontal or semi horizontal dropouts if I was going single speed or geared hub but that is just me. Just cause it looks cleaner.
I'd recommend staying away from the chain tensioner adjusters that use springs cause that kind are a bit crap IMO. They are way to easy to throw a chain IMO. I like ones like the DMR STS that are bolted down. The front ones look even better but I have never tried one.