They all come out of the same factory, the chinese will change some things for you but they wont retool to make major modifications unless you're going to buy 5000-10,000+ at at time. Tigerz11 will not be doing this. Supercheap are going to have the same winches as everyone else that sells cheap chinese winches. They will do what some people want, but they are not going to compare to a Warn. If you need a Warn, get a warn.
Ironman don't "make" or design anything at all. You can find everything they sell on Alibaba/global sources exactly as they sell it. It's not a brand name, it's a rebadge name.
The advantage i see in buying from supercheap (not that i'm buying a winch mind you) is if you keep your docket, you'll get a new winch if something does go wrong with it. No need to send it back to the eastern states/wherever the company that sold it to you is from. Supercheap seem to have a store on just about every other street here in Perth, so i can only imagine they have the same in every other city. Just keep your docket in your glove box. This to me is the big advantage of buying cheap crap from somewhere like supercheap - if it screws up, there is a massive company backing it.
If i bought a cheap supercheap winch - which i would i didnt have a silly alloy bar - i'd probably make a few changes to it myself - especially the electrical side of things, but at least i'd know if it went bang in the bush i can drive a few hundred k's at most and get a new one handed to me. Sure, it might go bang in the bush and i'd be without a winch.. but if i didnt buy it/spend the $368 on it, i'd be without a winch anyway! Hell, you can spend $300 on a crappy hand winch at supercheap or a camping store!