We need to keep in mind, GBF, no matter the season has two primary audiences: kids and Gunpla builders. This is the show for Gunpla builders, and I think it just makes sense if the toyline dictated what people thought. I preferred the original story overall, but I also loved how diverse Try was in the designs. I don't actually recall the original featuring any SD's. To me, it comes down to what you're looking for. I really liked both.
The story writing enthusiast part of me prefers GBF, and the Gunpla building part of me (what got me into Gundam in the first place) loves the designs of GBFT. They both have their pros and cons, it's a matter of what you like.