I love Axiom's Envy and Proxy. Both are amazing throwing putters, great for putting and great for approach. The difference is that Envy is a tad more stable than Proxy. Whereas Proxy flies dead straight for me, Envy has a greater tendency to fade. Together they make a great pair that covers most situations you are likely to fade. The same applies to putting. If you need the putter to fade a little in the end, use Envy. For a straighter putt, go for Proxy. I use Proxy from Circle's edge and beyond, whereas inside the circle I usually putt with a Harp because it has aerodynamic putting characteristics comparable to a brick. For plastics, I prefer Electron Soft because of its slightly chalky feel. Both putters are quite shallow and flat, which I like.