just went with riddlers. Added lubelockers, and went out and got grade 8 bolts/washers. Had to go with 1" long bolts (they supply 7/8" w/ the riddlers) these seemed a little long, so I went with 2 split washers on each.

Per the advice of Dave @ Northridge, did not torque them, just used common sense. (used the tightening pattern on the lubelocker packaging as a guide, went through this bolt pattern 3 times, getting a little tighter each time) So far so good! No leaks, and they look great!

Side note: DO NOT do what I did, and try to figure out your angle of the bottle for filling after you have cut the spout, inner seal, etc. I was doing this, the cover popped off, and the fluid took the little bottle cap right into the fill hole!!!! million to one shot!

Luckily I had lubelockers, or it would have been a REAL big pain. So, I did my rear cover TWICE! Luckily I had bought one extra qt. just in case!

 

I think most any aftermarket diff cover will suffice for protection, but the reasons I chose ARB are:
- low profile/less chance of clearance issues with trackbar
- recessed bolts/less chance of them getting filed down by rocks
- magnetic dipstick

 

I'm leaning towards ARB myself

 

I went with the Riddlers w/ lubelockers as well and really like them. Plus I painted them yellow to match my Jeep.

 

I think it's really personal preference, as any aftermarket diff cover will be substantially better than stock. It depends on how much you want to pay, and which one you think looks better.

 

If a product is stronger or better than another I don't care about cost

 

I purchased a Teraflex cover and while at Rausch I slid down into a rock. Brought the jeep to a dead stop and just scratched a little bit of the paint. Well worth the purchase!

 

I have the riddler covers and love them. No problems at all.

 

Poison Spyder Customs Bombshell (Powdercoated from factory, with a little extra by yours truly)

 

As was already mentioned, they're all equivalent, and you can't go wrong with any of them.