All fail safe does it return servos to a pre-set condition upon signal loss. This wont prevent a crash. Not at all similar to a stabilisation or 'rescue' feature.
The Brain2 / ikon2 or Spirit are options that have stabilisation and 'rescue' functionality included in the price. The AR7200, AR7300, Microbeast and Vbar don't have that capability at all. The AR7210, Microbeast Plus and Mikado Neo do have the capability but you have to pay about $100 extra to enable it.
Personally i think the Spirit range has the best stabilisation and rescue capability of all FBL systems. None of these FBL require a PC to make field adjustments. They all have integration capability with the transmitter so you can adjust them from the Tx.