Fwiw ... my personal experience:
Stern Whitestar: owned dozens of them. Never had a reset.
Stern SAM: owned lots of them. Never had a reset.
Stern SPIKE: own GOT pro,
KISS Pro, As pro, Bm66 premium, and had a GB pro at my house for a month.
Kiss: occasional resets. Maybe 3-4 ever
AS pro: unboxed last week. Crashed once.
Bm66: no crashes yet
GOT pro: crashes occasionally, inevitably when I am about to start Iron Throne. Lol
GB Pro: started crashing every few days, in two weeks it was crashing every game when you hit the flippers, like an old 1990s BW with bad bridge rectifiers. Local agent talked to Stern for an hour and they said the flipper node board has a watchdog in it that resets if the voltage falls too low ... same as a WPC CPU does (that's why WPCs crash)
They sent a new power supply and it hasn't missed a beat since.
That's where the reset issues are.
I was talking to the local agents tech, and he was saying he thinks the power supplies have a pot in them to bump the 48v a little ... which would fix the problem. I haven't seen him since then, so I don't know if they do or not, but if they did bump up to say 48.5v that'd sort the problem for sure.
rd