I'll agree that the Yeti is a great choice for this style putt. Also try a P2 if you haven't already.
I'm still convinced though that the BEST putter on the market is the Challenger. Get your hands on a nice firm and slightly concave one (check the team stamp ones on dynamic's website) and you'll forget all others.
Final thought, MVP discs suck for push/pitch putting. If you don't spin putt they glide like bricks. Sure at 15' it doesn't make a difference, but 25'+ you'll have to lob it 15' above the basket to avoid caging it. JMHO from experience.