I've had FR380 on light trucks (OEM on Ford) and while they gave only about 24,000 miles wear until I was not comfortable keeping them for the coming winter (would have likely been good for another 8-10,000 dry weather driving), they were much smoother, rounder, quieter than the supposedly premium Cooper tires I bought to replace them (Trendsetter STE).
Firestone also has more premium. tires (performance, high mileage, agressive treads) that fit light trucks or SUVs, Destination series particularly, or the Transforce commercial line used on 3/4 ton to 1 1/2 ton trucks and delivery vehicles. I'm familiar with Transforce HT on 12,000-14,000 pound vans, think they are just as good as Goodyear's equivalent Wrangler HT or the beefed up, E-rated version of the tread patterns and sizes that carry the extra ply.
None of these are the equivalent of Bridgestone, Goodyear and Michelin all-steel commercial tires made available in a few sizes small enough for a 1/2 ton truck, if modified to use the heavy duty wheels these tires need. But chances are you are looking for tires to fit the wheels you have, that's going to limit inflation pressures and carrying capacity, and I don't think you will find tires of that type in any other brand to be significantly better than Bridgestone's Firestone brand.