I won't bash either lift kit, but I would make a couple observations about the differences.
Trail Tough's - I only notice one set of springs. You might call Brent and ask him if different weight springs are available for your 4-door with the V6 engine. A 4-door truck is slightly heavier than a 2 door and a V-6 is more weight on the front than the 2 liter, right from the get-go.
Rocky Road's - the base of their lift is the proven Old Man Emu springs and struts. Rocky Road substitutes different shocks (than the OME shocks), but you will notice they offer various spring rates for 2-door and 4-door trucks... because OME knows there is a difference in vehicle weight and they have factored all this into their OME suspension, to work together as a designed suspension system. The question I would have for Rocky Road is WHAT is the coil spacer they sell with their lift kit made of? Call them and ask. If it is still made of that soft rubber that they use to sell, then that would be the weak part of their lift, in my opinion. If their coil spacers are still made of the soft material, they will continually deform and as a result, your lift height will continually decrease as well, and your camber will continually change on the front end of your truck, which will be hard on your front tires. The coil spacers need to be solid, preferably that super dense urethane or at least metal.
Calmini's - they make great components, but again, are their springs adapted to the vehicle or are they one size fits all?
Of the three, I would go with OME suspension components, but I would want to know what their coil spacer is made of. Without coil spacers, the OME suspension will only provide you with about an 1 1/2" of lift over stock max, and that comes in the form of stiffer springs designed to allow you to load your truck without compressing your springs. The OME suspension provides a greatly increased ride and handling, though. I've run an OME suspension on my truck for about four years and I love it. If Trail Tough offers various spring rates for different model trucks, their stuff is always quality as well.
I think Trail Tough use to handle the OME suspensions and maybe they still do. I bought my OME suspension from them four years ago.