So,a little update. Little_D reached out to me to offer me a ride in his UTV progressive spring equipped Raptor. SO I took him up on it, great guy!
His Set-up: 2013 / UTV progressive springs on Mid perch / RPG stage 3 (SD leafs) / stock tires
First off, the stance does sit up a bit higher in the nose, which i like, pretty much level if not a little nose high with the National SD springs. Secondly, he says he has he's never had an issue with 4x4 binding, but he doesn't use 4x4 much, so 2012+, proceed with caution but looks promising.
The test drive, we just went for a little joy ride on a pretty rutted dirt road, which i was seriously impressed. It felt smoother, he was moving pretty good and it never bottomed out, and there was no pogo, just smooth. On road was smooth too, yet firm, but comfy... but we didn't drive much or far enough.
I'll give more feedback once i get back and take my truck off road next weekend. i'll also put my feedback up once i order and install these springs, because i am 100% sold on them. I'll make sure to document my before and after height and ride feel. I hope to have then in a month or so.
But at this point, I don't see how we could go wrong ordering and installing these springs, especially at the price point vs. 3.0s.