I had it originally July 2012 then sold it in December, then bought it back in January, like I said, nearly a year, only 3 months off so I guess, if you want to be exact, 9 months.
The group was Immortals, in June/July 2012. Then, it got changed to Heartless/Melodic and finally Immortals. And, yesterday, we changed it back to Infinite.