These throwing putters are speed 4's feel more like putters and fly like short mids
Axiom Proxy: 4/4/-1/0/0.5 - depending on plastic and weight of course but typically its straight to slightly understable (like a longer Pa4 for me or shorter M4)
MVP Atom: This disc rules. 4/3/0/1 Depends on plastic Proton is like champion and is more stable, but is STRAIGHT even with 500 ft power its a laser and it flies like a fresh Z Buzzz but in putter form, its sweet. Electron plastic is softer and wears into 4/3/-0.5/0 Its super straight tho, I use a proton atom and electron atom in my bag
Axiom Envy: This was the original BEST DRIVING PUTTER ever - I say its 4/4/-0.5/2 - Its very similar to the Proton Atom but maybe a lil more glide, a lil slower and more of a hyzer finish, but powered up it goes straight - really can do anything with it
MVP Particle: This is a lot like the Envy from what I heard - but maybe a lil more distance?? not sure haven't used one but for a driving putter with a lil fade this will be good im sure
Plastics - Proton=champion ish , Neutron=Starish , Electron = baseline
Also from most OS to most US - if you're looking for nice driving putters or putters that can fly like mids, honestly look no further, these are better than most others I've tried and I try a LOT of discs. I'm not a fanboy, I carry many manufacturers just wanted to give me full speech, haha