You are correct in the sense that the 3X is no different than the 3SX other than the bail out feature. And I agree in that it's up to you whether you want to spot the extra funds for the bail out. It is the only one like it but if it doesn't concern you, then I would go with the 3X.
In the event that you're not familiar with Bavarian's rescue mode, what makes it different is there's an option to set it up so that if you're upright and need rescued, it will self level and give positive pitch to take you away from the ground and yet if you're inverted you can set it up so that it either keeps you inverted, self levels, and gives negative pitch to get you away from the ground or it finds the nearest axis, turns right side up and then gives positive pitch to rescue the heli. In my case I have it on a 3 position switch so that 0 flies like normal, 1 self levels ONLY, and 2 does rescue in whatever position I'm in.
I can't speak to the Gaui frames as I've never been up close to one but the Synergy frames, any of them, are tough! I've doinked my E5 at full head speed 5 feet off the deck and the frame was fine. They're thick and have stiffeners in just the right places.
Regards,
Brandon Bartolomucci
Sent from my iPhone