The difference is that many of the newer, high output power supplies use multiple 12V rails. Since I didn't want to deal with the complication of possibly having to parallel those into one output (and not knowing the power supply would be OK with me doing this) under the search I set the filter to show only power supplies with a single 12V rail. And a 650W power supply with only a single 12V rail will have some hefty current ratings.
I love my Triton2 EQ and they make very good quality stuf. Everything I wanted including high amp charge rate. I didn't wanna deal with having a seperate PSU just to power the charger, I prefer ease of use in all one package.
The tritons are nice but I still prefer the hyperions over all else. I have used MRC chargers, ICE chargers and Tritons along with the hyperions.
My hyperions are just stout and simple. MRC are just junk. I have owned several and all have failed. The only thing I don't have is the higher wattage because I have two AC/DC 0606I's. At them time I was in an apartment and didn't want to take up more space with a PS. Now however I would opt for the duo and a PS.