I route games for fun.
I am part of a group that has purchased and routed every spike PRO model to come out.
In short, every single one of them has had issues with the node boards/new technology.
In all cases Stern support has provided parts to fix the issues, but the bigger problem is the amount of time it takes on my end to diagnose and fix a brand new 5k machine. Combine that with players quickly learning to steer away from certain games due to issues and worry of failure while playing and it hurts the coin drop for the long haul (i.e. we have finally fixed our GOTG after 3 node board exchanges, but players still are going to expect intermittent weak flippers and other issues with out game forever)
Simply put, the spike and spike2 system is nowhere near as robust as the previous ones, parts fail often, and they are costly (or impossible) to get replacements as soon as the game is out of warranty or they run out of back stock for a game (since they revise them almost every title it seems)
Take warning as a home owner, because after a certain amount of time and number of plays you should expect to see more failures as these games age.
I will note again that Stern support has always gotten us squared away, but to me that still does not make up for the fact that the whole system has foundational issues (a flaky light bulb or poor code update can cause a node board to blow and coils to go weak)