[General Scales]

Depends on your putting style. Spin? Push? A combination of the two?

In my bag at the moment are three different molds of putters in five different plastics.

Yeti Pro Aviar. Thing is money and the first Aviar I've had in my bag in four years.
Zero Line Spike. Thing is super money. Stiff enough to push putt with without feeling like my thumb is going through the top of the disc. Tacky enough to grab a single link and stay in.
Grip Line Spike. Driving putter. I have two at the moment. A new one that stays straight to slight left fade if needed. Beat one that stays straight to right. More ace runs with these then most any of my other discs.
Pro-D Ringer. Wind putter. If everything else is getting batted around when I'm practicing, I know this thing will stay on line. Kinda flies like a brick though. Not a glidey putter.

I've been messing around with a few different putters as well but none that will replace my goto's.

P1 and P2 from Discmania. Seems like an Aviar to me and I really can't tell the difference between the 1 and the 2. They seem like the exact same disc even though they say they haven't different flights. My buddy Brian swears by them and has one of each.
Soft Ion. Thing just want's to keep going and even though the top is soft, the outside rubber is hard. Great looking disc and innovative. Just doesn't do anything better then my other putters so it's not earning a permanent bag spot.
10m Brick. Thing has the appropriate name. Seriously brick like in flight and seems to kill the chains when it hits them. That's if you can get it to the chains in the first place.

Hope any of this helps.