GBF is the bees knees. It's a true love letter to both Gundam and the Gunpla hobby. It's a bit silly because it's a show about Gunpla fighting, but in a fun, charming way.
But Try is utter garbage. I have no idea how they messed up this much despite afaik having the same writer and budget. I guess there's some George Lucas thing going on where the writer is actually terrible and all the good ideas came from others on the production staff, but they all went on over to work on Reconguista (which is wonderful by the way).
There are a few fights that are fun in Try, but for the most part, there's no point in watching it as it doesn't even have the same cast as the first season.
As for why it's garbage, without writing an academic paper on it, they got a really boring main cast that doesn't really interact much at all. Everything feels lifeless except for this guy:
Who actually gets more character development in 5 minutes than the whole main cast put together does in the whole of the show.
Also they made the show 3vs3 with Try. Sounds cool. But it really means 1/3rd of the screen time for the things you like. They didn't even try (HEH) to use this to pump out tons of interesting mecha designs so they could go for that sweet sweet gunpla money. What the crap, man.
At least the music is good.