Going to dig this thread up and weigh in since I've spent a ton of time on all the above mentioned.
First, Nascar is a fun pin, and it can be stupid fast if setup correctly. Plenty of modes, ''bash the car'', dual spinners, drops, captive ball. It has the goods, only the theme holds it back for many.
RCT- it has some decent shots, but the rules are lacking, and the troll is hands down, one of the most annoying things in a pin ever. The upper right flipper is a near waste, as there is a boring swing gate for it, but no upper spinner. And the top rollover are too difficult to get to- it's just luck if you do, which makes getting bonus x multipliers near impossible.
RBION- Fine game all the way, great shots, simple appearance, but the rules are all there and fun to boot. Not easy at all to get to Atlantis, but very rewarding feeling if you manage to. Just a cool little game.
Monopoly- This pin is very hit or miss with many. I love it. It reminds me a lot of Whirlwind, but better imho. It has good flow if you know what you're doing, and the art package is great, because it looks and feels just like the board game.
Dialed in, it definitely has the goods. One thing to consider is to remove 2 of the 4 plastic posts in the upper pops area. This opens up the ''shot through the pops'' area that Lawlor is famous for, to feed the upper flipper. It's just too difficult a shot because it gets hung up on the rubber when all four are in place, so I'm not sure what the purpose is for 4? I thought maybe it was to get more action is the pops, but I find there is still plenty of action in there with 2 posts.