As mentioned, if you're left handed, you should probably wear a mouth guard when you shoot the T97, because you're gonna chip a tooth if you don't.
I have the gen 1 with the t97.ca FTU, and it's much better quality than the OEM rails on the Gen 2 and Gen 3, which have been known to come loose during firing, screwing up your zero. No issues with it other than a bad mag when I first got it in 2013. I've put thousands and thousands of rounds though it, including steel core (A LOT of steel core) and it ate everything. I run it on the highest gas setting to ensure everything cycles. This also destroys brass, so if you're looking to reload, it's not a good idea. And even if you aren't running it on the highest gas setting, finding your brass afterwards is a chore on its own, as it launches it into the next town.
Overall, the thing just works. It's not super fancy, nor is it made with some revolutionary technology. It's simple and goes bang when you pull the trigger.
My RDB experience is limited, but I didn't like it. It went bang when I pulled the trigger, but experiencing a jam, given its unique ejection system, added a layer of complication that I didn't find very convenient when clearing. Other than that, it was solid. The whole outer shell was plastic though, with some weak areas. My whole outer on my Tavor is also plastic, but it's re-enforced with steel inside where it counts. If you don't plan on using your rifle as a blunt melee weapon, you're probably going to be fine...
When it comes to accuracy, my T97 was more accurate, but it's also more accurate than my Tavor.
It all comes down to personal preference really.