RCI is local, up in Loveland. Good stuff.
I have CBI stuff. They're up in Idaho, long time Toyota support, good stuff, too.
ARB is good, well developed stuff, it will fit and the quality is top shelf.
Steel 3/16" is great but heavy. I have a 3/16" front skid, CBI in fact I think. It's got some dents and scars. Weight is a downside, you will need to start considering impact to spring rate when you put 3/16" skid plates on your truck. If you have to take it off you need to roll out the floor jack. Not something you're likely to do on the trail.
Aluminum is a significant weight savings and 3/16" (which I think ARB uses) or 1/4" are strong enough for a hit but if you start dragging it a lot it wears away leaving deep scars. Did I mention the weight saving?
If you plan to be careful my $0.02 is 1/8" steel is a nice compromise but it's not as common and it will start to show wear and tear faster than 3/16".