Cinema 600 won't turn on. No support from Klipsch except a 30% off coupon that tied to my account. Should I buy another Klipsch?

For those of you have been seeing Cinema 600 power supply failures, my unit also died (likely due to the same reason) after ~4y8m of use. I thought the warranty is 5 years so I contacted Klipsch and asked for support to repair the unit but the rep told me warranty for sound bars is maximum 3 years, so no luck whatsoever. The rep did give me a 30% off coupon towards next audio system purchase on the website. Now I'm sitting on this 30% off coupon (that is tied to my account so no transfer) and wonder if I should use it. But honestly this experience really scares me off given this issue was so widely spread across the Cinema series. Don't know if I should trust Klipsch again but we did like Cinema 600 when it lasted though. For those of you owning Flexus CORE, how do you like it?