I have the NOW ipo’s , holograms and switchbacks I would say the swichbacks are maybe what you are looking for. I have the winged highbacks and would say they have good flex but not as much as the holograms. I know what you mean about them folding under a good amount of load like steeps. The good thing about the switchbacks is they can ride with no back and you get that hologram feel, but you can put the highback right back in after one run in 10 seconds. Now I love my ipo’s and they did work great on my blacklist in the pipe but they work I think better on my heritage just moving down the mtn. If you were near me I would let you try them out as see what you like better.