My solid roller lifter engine had about 8,000 miles on it when I lost a roller lifter. I got the car with about 5000 miles on it. From what I've read if you get 10,000 on solid rollers your doing good! THAT is the primary reason I won't use or recommend them. I drive my car WAY to much for such a low mileage part to be acceptable.
I went through extraordinary steps to break in my solid flat tappet, it's a big hassle and fraught with risk if you don't get it right. The biggest issue was removing the inner valve springs for break in and then having to reinstall them after break in, PITA.
MAYBE I'd go with PF solid rollers, probably not. Hydraulics of any kind are out of the question for me, just not my style, period (I'd be embarrsed to admit I was running hydraulic).
Yeah, I know, their terrific, which is kind of like the argument that "modern" whatever parts are better. OK, I'm sure they are, whatever...