I Love my Linksputt
fairly expensive and big but its adjustable borrows make it possible to practice all kinds left, right or twin breaking putts uphill downhill and of course straight, it stimps @ 9.5
the stance plate means you adjust that so you're stood at the same angle as the green
you cant get them new anymore but they turn up from time to time they come in 3,4 or 5m versions
i also practice short chips on mine