I can't speak directly about the GP60, but if you extend "LIfeLike" to include the Walthers versions, I have GP18's,GP20's,FM C-liners, E6's/7's/8's and SW1200's and all are solid runners. They might be a little behind on detailing compared to the best out there on some models, and the same for DCC readiness, but other models are nicely detailed and will take drop in DCC boards. I wouldn't hesitate to buy any engine from LifeLike/Walthers....If you like the looks of a model, it'll run better than it looks so go for it.