I d gig with it without a backup. I got it used, and it has no signs of failing. 10 Roland is very helpful and nice. 10 I would make my girlfriend buy another one for me, since i have no job now. I chose this one because my friends band uses it and i couldnt believe how real it sounded.
Settings are incredibily simple relative to other similar boxes.
I did my album with them. Manual is excellent. 8 Hi hat controller chops off between open and closed. Required custom sound to be built. This is the only draw back I can see.