I have the old version front and rear and they are very heavy duty 1/4" steel and heavy as mentioned. I had a lot of problems with the original tire carrier but they've replaced it free of charge twice. Once with gussets for strength and the second time it had a completely new design. The new version is much better. No rattles, easy to install and adjust.
The new rear bumper looks sleeker than the old one. Mine gets dragged over a lot of cliffs and shows no damage but I would rather have it tighter to the body.
Their prices are much better than most and the powder coating is top notch. Easy install with the old versions, don't know about the new pro stuff but I didn't need to cut the Jeep at all. Flipped the vac canister upside down, used a couple longer bolts and that was the only mod needed. The rest was bolt on.