I use the Golf Pride Tour Classic in mid-sized. They are getting rather difficult to find and I fear they may have been discontinued. I still have four, however, so unless I live to be a couple hundred years old, I should be good to go.
Love my ping anser sigma g. Retail was 140 USD, but I am sure you could find a used one for 100 or less. The only thing that I wish I would have done was to go shorter, because I am not tall, and hunch when I putt. Bought a 34 inch but could easily go down to 31 inch. Eventually I'll cut it, but it is still fairly new. The way I found this putter was just going into a big box golf retail place and putting for about 2 hours with all sorts of putters. If you have the time to spare, I would try this out.