Hi. I just started playing again after taking a break of over 1 1/2 years or so due to life getting in the way. I have the MAX L80 and still have an obsolete Nike Method 001 L72. I had used the MAX most of the time before I took my break as I like the multitude of putting scales available with it.
When I started playing again I tried both, but again found I was better with the MAX. I'm more accurate with the ding when I can keep my swing power under 20%. The MAX allows me to do that most of the time.
My biggest problem is learning to read the greens again. I completely left the game after going 4 months (guessing) without a round, and that was right about the time the Flash based game ended. So now I am playing using an android emulator or my phone.
I would suggest you consider waiting until there is a free rental weekend. Have a list of a few putters you want to try out and rent them You can find out what you feel works the best for you at no charge, and you will still get the 10% purchase discount if you buy one in the 24 hour period allowed by WGT
Good Luck and keep playing for fun.