Well, the comments here parallel the reviews I've read. The BFG had separations (which is odd since Michelin doesn't). The Firestone TransForce had good reviews. Michelin IS Michelin after all and holds their good following. I like to think the M/S2 has a different compound to fight the cracking in the recalled LTX tires.
It seems the Duravis is still a good choice. One review called one of those three (R500HD, M700HD, R250, forget which) "virtually bombproof."
Coach has four R250's on it now. They look good at 7 years old. Smooth, straight, absolutely ZERO signs of checking or separations. What I didn't realize was the two "Bridgestone V-Steel Rib 187" were older (2004 build dates!) and showing cracking parallel to the ribs in a few spots. No sidewall checking on them either. Bridgestone seems to use a compound that keeps its looks.
So at this writing...
Michelin: LTX M/S2 - looks good, better than original LTX M/S which I wouldn't want
XPS Rib - looks great but I can't justify the price
Bridgestone: R250 looks great, XPS Rib qualities at lower price and it's another Highway tire which is what I think is best for our usage
R500HD and M700HD - Unclear what they do that R250 doesn't - probably M/S - need more information. Seem to be priced below R250, wonder what they leave out. R250 (and Mic's XPS RIB) listed re-treadable. If that's the only difference I don't care. Won't be capping RV tires!
Firestone: TransForce HT - Looks like the best Price/Performance
BFG: Commercial T/A AS-2 - Might be OK if it's an updated version. They had AS and now brought out AS-2, sounds a little like Michelin's "-2" release
Goodyear: Wrangler SR-A - Perplexing as it comes in both "LT" (load range E) and the less capable "P" series (not "E" and 800-lbs less capacity per tire)
Wrangler HT - Bears investigation
I've gotten this info from webpages and tire stores. Tomorrow I'll have brands and prices from the Navy base. Last time the price was OK but tires were off-brand. I doubt I'll go that way for RV tires but it'll be interesting to see.
THANKS for your considered thoughts!
Case Pends...