Haven’t been able to compare those binos, but I have compared the vortex vipers to the Maven C.3. The Mavens were significantly better IMO. At that price point that is where I would lean.
This is also more circumstantial but in comparing other Athlon and Vortex products at similar price points (spotting scopes and riflescopes), I have yet to find a vortex optic that beats the similarly priced, and often even cheaper, Athlon product. Again, never compared those binos directly, so take it for what it’s worth.
Warranty also shouldn’t matter between any of those. Vortex, Athlon, and Maven all have the same warranty. It’s easy with any of them.