My thoughts, go with the Dexters. It seems that Lippert is a one size fits all assembly to me. Maybe you are looking at it opposite and instead of it being heavier duty it is just the same duty butcheaper.
Lippert made their assembly so that it will be ok to use on either size axle, hence making it cheaper to have only one model for their axles. Take a look at Lipperts track record, do you really think they are going to over engineer something to make it stronger and more expensive to make? When they do the bare minimum on everything else they make?
Brian, Tamara, Abigail
2003 Lincoln Navigator Ultimate Edition 4X4
2004 Crossroads Cruiser CT30RL