Hungrealow:
Plan on saving credits till L94+ for end game putter decision.
If you are waiting that long, wait until L98 and get the Titleist which is currently the best in the game.
If you want a gr8 putter to get you to L98, I highly recommend the The Max Control (Master+). It is a gr8 value at 2500 credits, and it is as good or better than it's L80 counterpart. The specs are identical, it's 250 credits less, and if I remember right, it has more versatile meter increments. The meter increments on the Max Control (master+) are the best in the game.
Have fun with whatever you chose, and keep in mind it still comes down to learning the greens.
Cheers
BP