I was in exactly the same situation about 10 months ago. When the Bronco came in we ended up keeping both the Gladiator and the Bronco, even though that wasn't the original intention. I really like them both, but if I could only keep one it would be the Bronco. Much better for all around driving...
I asked the parts dept. at my dealership for a quote for the OEM hard top. Three full pages of part numbers with a total cost of over $23,000 and $1100 labor.
I'll eventually get the one from Advanced Fiberglass but I don't want to be a beta tester (guinea pig) for the first batch.