Terry, I looked at the Jaycar "Ctek clone" and dismissed it.
It smelled of one-upmanship by a Chinese flying carpet company. I don't care how good it actually is, but it was way overpriced and looked like a deliberate attempt to be a C-Tek charger substitute.
My C-Tek charger is an 8-step charger - more than enough. You really only need 3 steps (bulk, absorption and float). The Jaycar one is "9 steps". I am waiting for the next Chinese factory to bring out 10 steps, then 11, and then a battery charger that will lead you to a full recovery program from alcohol abuse.
Jaycar don't always hit a home run for me and this particular charger - at $495 - strikes out for me. Sometimes, some things just beg to be bought, and others are begging so much, and boasting so loudly, that you wonder why they're so desperate. This charger is one of them.
It might be good, but I went "genuine" and have not looked back, nor have I had a failure in hundreds of hours and thousands of km of use in a variety of environments, from the freezing -5C we had in Bathurst to the 43C we experienced in the middle of Australia.
The Chinese one from Jaycar might be just as good, but then it should cost similar, not more, and shouldn't feel like it's trying too hard to be its competitor.
Maybe I'm just being peculiar! Still, when you're out in the middle of nowhere, I'd rather be relying on something I know has a good, solid reputation than something that may not live up to the demands placed on it.