Is the consensus that Bilstein 5100's are the best cost effective way to level a new F150 (I'm not interested in pucks)? Would it be worth it to go up to a 6112? I don't off-road other than hunting trips , but can get into some moderately rough stuff a few times a year. Also, if I stay around 2", any need for UCA's?

I think the Bilstein 5100 is the good option. Don't think you need anything more and much better than spacer.

IMO, Eibachs are the way to go. Pro 2Rs are amazing in ride quality. No need for UCAs with a 2" level.

5100s rode like stock, 6112s were a vast improvement in handling and comfort for me. I was mad at myself for not going to them earlier.

For me ride wasn't as much a concern but I believe the 6112 can get a little more height? If I had known that I would've went that route instead of 5100 but I am happy with the 5100

I had Eibach Pro 2R on my Ranger. I did like them a lot. But , like the 6112s, about 2x as much money. Also, I waited forever for those shocks to get off of back order. Maybe that's just for the 2024 and up Ranger models because that's a newer product