I have both and if you have the money, I’d go ahead and get both. M4/V4’s Iconic shapes don’t come with muscle morphs. Solved if you get the Evolution morphs with it or GenX to transfer any of V4/M4’s morphs over to Genesis.
But it also really depends on what your going for. If you just want the shapes and aren’t concerned about muscles and such, get the shapes. If muscles are your thing, get the Evolution Morphs if money is a problem.
But based on my experience, if you can get both, get both. Both are excellent products.