Greensboro, NC
No way would I buy nib. You can buy 2 or 3 good machines for 1 nib. Since you say you drive the wheels off, you might get a high price turd and start looking to unload quick. Nothing spoils fun faster than a high price machine you don't like.
Do you like fixing and restoring or are you plug and play? Get a couple of fun good used machines and a nice project and dig in.
Go to a expo or a local auction and play a bunch of machines. Look here on pinside maps and find locations and go play. To big a gamble to listen to other people.
Personally, I wouldn't buy the machines in your poll at half price. The play, rules and features are just to similar. When I first started taking my girl out to play she said "they all seem to much alike, I like yours better".
Saint John, NB
