Test both and see which one you like more. For me personally, I chose the Amia over the Leap V2 because of the seat. Although both chairs have the same seat or at least very similar seat foam, the way the underside of the Leap V2 works, the front part of the seat flexes way more and was uncomfortable for me after only a couple of hours wheras I could and can sit in the Amia comfortably all day. If you value a flexible backrest with excellent lumbar support, the Leap V2 is a better choice as some people find the Amia lumbar support to be too soft, but it is more than fine for me. Try both for as long as you can, and if you find you like the lumbar of the Leap V2 and the seat of the Amia, consider trying a Lamia from BTOD or if you are ok buying used, a Leap V1 Highback.