Two completely different animals the Axis 90 is 1277cm 2 the Sig/Uni 175 is 1130cm 2. The Axis is a wider arc carving/pump wing the 175 is a full blown wave riding surfing foil. I can see where this is coming from there has been some insane videos on insta with guys ripping on the 175. These guys are light weight super fit young guys who just shred and make the 175 look effortless . I have ridden both and yes the 175 is amazing but I need a very solid wave to keep it going and pumping was really tough for me at 85kg , once you lose your speed you are down. I'd never consider the 175 as a daily rider but would be good on bigger cleaner days.
Signature are working on a 200 which is in proto stage NOW that will be insane.
talking to kdmaui on instagram to determine between a lift glide 200 classic and a stealth 175. The stealth is for surfing waves with power and surfing in the pocket. It is not a pump wing. If you're over 175# you're probably to heavy for it. I went with the lift 200.
He also mentioned signature is working on that 200 which he thinks will be better than the lift but "not worth waiting for."
I went from the Naish large to the 175. Has roughly the same ability to connect waves as that but achieves it in a different way. Less hard lift but also more speed/less drag. If you exit a wave with speed then if you've got the energy to keep it, it will feel like it will never stop. what it's not so good at is pumping at slow speed or trying to gain pump speed from a slow start.
Incredibly loose on a wave though!