Howdy Mike, welcome to Aussie Pinball!
New machines are pretty much limited to Stern games, so as I am not a massive fan, I'll leave it to others to comment on Stern games.
For the price of a new Stern (which are a bit expensive IMO) there are some other good alternatives to consider (along with some more recent but not new Sterns), such as a restored late model Bally/Williams game for example, some of which can be had for a lot less money but if restored by a collector, are generally just as reliable.
