I've heard the Mako works very well, but I've never had much luck with it. I have one here that A friend gave me that I haven't even tried to install yet. I suppose if someone really needed it I might be willing to part with it. I'm pretty sure they're out of stock at RC tank australia.
This new unit looks pretty good, I might give it a try in my king tiger, if I ever get back to that project, if I live that long.