Comparing the two, I would pick the Road Armor due to the design. Lippert hit a winner with the concept as if the rubber disintegrates over time for whatever reason, the design will revert back to a standard rigid equalizer and not leave you stranded on the side of the road. Yes, you still have to deal with a busted-up rubber, but the camper is towable.
That said, the four areas below are what I have found to have issues on the Road Armor. Again this is my opinion, take it as that, only an opinion for you to review if it fits your situation.
1. They have wet bolt greaseable bronze bushings on the shackle pivot points but not on the center of the pivoting connection arm. Yes, the center hanger has a grease fitting, but not the connection arm pivot. They are using a sintered bronze oil-impregnated bushing that comes in the stock configuration as non-greaseable. The setup will and does work with the sintered bronze, the unknown is, how long will it last? The greaseable bronze that is greased as it should be would outlast the sintered bronze. I suspect the reason why they went with the sintered bronze was to prevent the over-lubrication by someone not knowing what excess grease can do to blow out on the rubber shock absorber members. But, the shackle bushings grease will still have some level of grease overflow onto the rubber.
2. The weight rating is high on the unit. It is rated to a set of 8,000# axles. That is 16,000# of trailer. The metal on the sides of the unit is thin. The thickness versus the rating seems, well, questionable. I have seen enough I-beam frame trailers bend at the hangers and frame web, that using metal that thin is under a good amount of side twisting forces in turns.
3. They list the unit rated for a 3,500# axle. I installed it on one of my campers with 3,500# Dexter underslung axles on 15" tires. The Road Armor will hit the ground on that combination. I did an axle over/under conversion to gain more ground clearance and the problem went away. They could have warned against this.
4. I still cannot find any printed documentation on the dimensions of the unit. I had to buy one and measure it, then make it fit with the camper. If you have a standard 33" axle spacing and not on an underslung axle, then it may not matter if you do not have dimensions. It would sure help to list the basic dimensions as there are many trailers not using a 33" spacing on the axles.
I have used the Dexter EZ Flex, (both the large and small ones) the Original Trail Aire (before LCI bought them) heavy unit, and the Road Armor. All three have drawbacks. That said, if I convert another camper to have a rubber equalizer I would pick the Road Armor over the other two and the MoreRdye as well. I learned how to deal with the 4 issues I listed above. The largest camper I would use one on is a 10,000# camper, partly due to that being the heaviest TT I have to use it on. Not sure I would go to a 16,000# 5er with it. Maybe someone with data or years of use at those weight areas can help give some guidance.
Hope this helps
John
PS. Tom, it just dawned on me, we are neighbors! Radnor is not very far from Delaware. Wow, that's close by on a national camping forum.
2005 Ford F350 Super Duty, 4x4; 6.8L V10 with 4.10 RA, 21,000 GCWR, 11,000 GVWR, upgraded 2 1/2" Towbeast Receiver. Hitched with a 1,700# Reese HP WD, HP Dual Cam to a 2004 Sunline Solaris T310R travel trailer.