Want an advice

I'll get straight into it I'm driving a Corolla since 2013 and I just wanna treat myself since things got better for me! I'm from Saudi Arabia and a Cadillac big fan since my grandfather was driving only Cadillac and the way he was in love with his caddies got me into it lol. I was looking at the new CT5 and I really like it but I'm just afraid about what people talk about Cadillac nowadays that they're unreliable and will breakdown before it's time. For more information I'm planning for the 550T, any advice?