Metalcloak claims to have the highest clearance flat fenders and their Duroflex joints appear to bridge the gap between stock clevite bushings and re-buildable joints making them a great option for daily drivers. Metalcloak's dual rate coils actually backup the available travel in their suspension instead of just making claims of "flex" and "max travel" only to provide short coils with little travel like some have done.
I've replaced my rears with the Energy ones (because my stock ones were shredded). As stated above, they are not progressive but do keep my tire out of the fender. They're probably better suited for a race car than a 'crawler.
2010 Mango 2dr 6spd Rubicon
PSC BFH front and rear, Warn 9.5cti with viking synth line, Rigid duallys, RROR full skid,
RK 2.5 max travel pro with RRDs, 37" Nitto Trail Grapplers, Tera 44 front, Tera 60 rear with 4.88s