Quoted from Natetheviking:I see you are in Louisville as well so my advice would be to wait for the expo in a month. It's a pretty good place to buy a machine. Last year there was a TNG, WCS, and TSPP all more or less within your range.
Exactly what I would suggest!! Prior to buying my first pin ( Tales from the Crypt ) I went to a few pinball/arcade expos and tried out as much as I could.... Keep a record on what keeps pulling you back to wait in line to play the pinball game again... I agree with everyone who says buy local to be able to try out the game. The hard part for home pin usage is: Which game to buy that keeps you excited to play it over and over and over with the same enjoyment to be an owner of the machine.
Good Luck... Too many good games out there.