Like a lot of people I've followed the P3 but wasn't impressed enough with Lexy Lightspeed or the other less traditional pinball modules to invest in one. But Heist tipped the scales. The game is amazing, and is up there with the best pinballs ever made in my book. It's certainly the most innovative, by far, while retaining the soul of traditional pinball.
I don't put much importance on a licensed theme versus one that is well integrated and immersive. Heist may be the best integration ever of an unlicensed theme: there is an engaging storyline and every character has a unique personality that is brought to life though the artwork, numerous call-outs and animations.
At the end of the day though, it's all about playfeild design and rules for me. I can't think of a smoother fan layout, and while there may be a few machines like JM that are faster, Heist gives them a run for the money. Every shot is important to the game and well balanced within the rules. The three loops, two outside and one inside, are lightening fast and can be hard to control. The ramps are relatively easy to backhand or combo and the geometry is so well designed that the ball seems to be pulled over them. The up the middle u-turn/spinner shots are also extremely satisfying. Plus every shot has multiple states. My one complaint is that action in the pop-bumper area is weak even with sensitive switches. The rules are also outstanding. Every mode has a unique, humorous personality, and there are plenty of strategies to advance or go for score. Unlike most games today, you have to work hard to qualify the two main muliballs (Crane & Police) which I prefer, and the Jailbreak and Heist multi-balls are unique and add a lot of risk-reward strategy. This is a tough game that requires better than average flipper skills on factory settings, but the out-lanes are easy to close down and you can tailor the mode timers and other settings.
The machine is extremely well engineered and built. It likely has the highest cost BOM in the industry. There is a learning curve to get comfortable with exchanging modules and working on things but it all falls into place if you are mechanically inclined and know your way around a traditional pinball. My Heist module was a relatively early build and had some bugs but Gerry and TJ quickly addressed everything. There is no better service and warranty in pinball.
I also bought the Lexy Lightspeed module and while the playfield design, theme integration and animations are not at the same level of Heist, it's an excellent game in its own right. Top 50 IMO. The platform is just too different to quickly grasp and appreciate playing a few times in a loud show hall.
With Stern and JJP LE prices basically at $10k the P3 is no longer "expensive" versus the competition. It doesn't hold its value as well due to the smaller buyer pool, but this is more than offset by the prospect of new modules at half the price of a Stern pro.
If you're a serious player or collector with decent skills and want something more than the formula Sterns, then I wouldn't hesitate now to go for the P3.