If you're going to spend that much for a putter, I agree with @iacas that you should get fitted for an Edel putter by your nearest fitter. My friend @colin007 has an Edel putter and from the rounds I've played with him, I can tell he loves it.
The set up has to be overrated and proven so by the likes of Padraig Harrington doing the running start with a driver and other guys on youtube doing all kinds of crazy set up swings but flushing the shot.
Years ago... Ernie was my hero. I did everything "Ernie-style".... my friend used to call me Ernie (hehe). But the big difference was that my swing was terrible and I had a huge fade (err... slice, ok,ok). After spending a number of months in Evolvr and reading LSW... things have started to straighten out. My latest setup change was with the driver by moving the ball forward, teeing higher and closing the stance (adds a bit of a draw). Still working on the ball position with the irons. Oh, and yes... I still like Ernie .... just changing up the swing for what works for me (smile).