So I have both an Ironman and an ARB awning on my FJC.
I have the little 4ft ARB that is great. Easy to deploy, gives good shade for the rear table built into the door. No complaints. I have had it for about 6 months now. Gets deployed every weekend while I am at bike races.
I just got the 6.5ft Ironman over the weekend from TRDParts4u. They did not have it stock, as most dont carry them in stock anyhow. Was shipped direct from Ironman (NJ office that is moving to CA) within 5 days to me in Colorado. They are primarily the same awning. The bags are different, the guy lines are different and the tent stakes are different. That is about it. The cool thing with the Ironman, they have built in LED lights now. One strip that comes with a cigarette charger and an adapter to your battery to light them up. The poles, the fabric and the patches at the corners are all the same.
I really wanted the matching ARB 6.5ft awning but nobody had them, ARB did not know when they were getting them. The ARB guy was up front, appreciated my business and loyalty but said if you really need to have one, you should find someone who has one. I told him about the Ironman one and he did not talk "bad" about it one bit. Props to them for not trying to bash another product.
I have to say though, I like the Ironman awning. The bag is black so it does not show off the red dirt of the desert. The LED is a nice touch. Eli at Ironman was great to speak with about the differences and availability of them. Plus TRDParts4u has a coupon for 10% off all Ironman products (ironman10) and they do free shipping on all Ironman stuff. Got the awning for $214.00 shipped to my door. Saved about $60 dollars over anyone else.
Good luck with your decision. Biggest question is: Do you want a big black bag or a big tan bag on the side of rig?