It really all depends on what you need the discharger to do. For example, my charger discharges at 10 amps, which I find to be sufficient. So, all I really need is an equalizer tray with low-amp discharge, which is a Novak Smart Tray (which I love, btw). See, NiMH batteries really don't need to be cycled like we use to do with Ni-Cds. Just charge them and go. What helps, though, is equalizing the cells before charging. And, if you've got a pack that's still got half a charge, you may be waiting awhile for it to get down to 0.9 volts/cell.
So, I guess what you need to ask yourself is "What do I need?" AND, pay close attention to how the batteries are secured in the tray. Those thumbscrews (like the RDLogics you're asking about) are a real pain!