That makes me wonder who you talked to.
I deal directly with Nick, the owner, and he is a very big fan of the brand, even a member here. In his words , he doesn't and won't sell junk, because it's not worth the headaches and costs you more in the long run.
And if it was 2012/2013, I know the Z600's had some known problems, but they have come a LONG way since then.