I like the middle arm best. It is the easiest and fastest to change the post. I have DW, Tama and Pork Pie kits which all have different size mounts so switching drums means switching mounts. They all work well and are comparably priced.
Chris, I don't think you could go wrong with any of those choices. I built up a custom Gibralter Road Series rack with quite a few ball-and-socket mounts for my old Hart/Roland E-kit, experimented with all kinds of positioning over the 10 years that I played it, and all the components were rock solid and never failed.
If I were buying today, I agree with cashman and would go with the BCLR-M for both its versatility and aesthetics.
Make sure the l-rod fits the bracket on your tom, there are different l-rods for different brands/makes.
How are you going to mount it? The left and right one have a longer main post. The middle one is what came standard with my tom to mount to a cymbal stand via multiclamp, might be a bit lighter?