I have the MKII as well, it does all three types of batteries, 2 at a time if I want. Mine works very well! I haven't anything bad to say about it. I have heard guys in the electrics talk like if you havent spent $300 on a charger you've bought junk. I don't buy into that theory. The MKII works like a champ! It also can be fitted nicely into your field box right above or below your power panel. I have mine set up with connectors that allow me to run it off the power panel of my flight box, or another connector set-up that I mostly use, that allows me to run it right off of my F-150.
I suppose if I were an electric power kind of guy, & that was all I was flying,[:'(] maybe then I could see investing in an expensive charger. Since I'm a real-power kind of guy,
this one suits me just fine!