Two very different modalities. With the TRX, it’s all about stabilizing against transverse rotation. The Rip Trainer is more about moving within it. That’s a bit of an over-simplification since there are some transverse moves with the TRX and some non-transverse moves with the RIP trainer, but they each excel at different things.
Personally, I use a CrossCore instead of a TRX because I like having a pulley at the top so I can do unilateral exercise, hook a kettlebell to it and use it as a cable machine, and it’s really easy to assess clients’ imbalances (they tip to their weak side). And for the Rip trainer, I have the Stroops fit stick (the original stick for the rip trainer) and Slastix bands.