If it was me, I'd look at ARB vs TJM.
I've had all three brands on three separate vehicles: the TJM on a Land Rover Discovery, the Ironman on a Nissan D22, and the ARB on a Nissan D40. I'd absolutely do TJM or ARB again. I don't think the Ironman is a bad choice per se, but I don't think it's as good as the others. Aesthetically speaking, the Ironman's bull bar looks too tall for me on the 100/105. If you look at the ARB, you can see what I'm saying. The height of that bar from the bumper seems excessive compared to ARB/TJM. I'm not a huge fan of the winch cradle Ironman uses vs. the mounting points ON the bumper like ARB, which I think is better and is definitely lighter. I'm not saying the Ironman is a bad bumper at all, I'm just saying I prefer the other options.
Then it's sort of what you decide you need. For me, a full bull bar is a must because of the animal strike risk. I like the ARB Sahara a lot, but the aluminum bar is not likely to be as tough as the full bull bar of the deluxe model, plus it doesn't protect the headlights. The front end coverage on the TJM T17 is even more minimal, but I can see the appeal of the minimalist aesthetic, plus some weight savings. If you're not concerned about animal strikes, these are great bumpers.
If you need the full bull bar, it's TJM T13 vs ARB Deluxe. I've used both and it really comes down to aesthetics. I like them both and they are both really well made. I like the rubber bumpers on the ARB, but I like the contours of the uprights on the TJM better. I definitely prefer the fog light housing of the ARB to the design on the TJM, but that's a personal thing. Again, it's aesthetics between these two.
I think it's hard to go wrong either way really, just need to decide what suits your tastes and needs.