I know a couple people with CTSs. Two with sedans, and one has a coupe. IMO, they don't age well. The leather is cheap and cracks quickly and easily. I honestly don't even think it's leather. All have stupid issues, like door latch and striker issues. Every single one of them. The guy with the Coupe replaces tires every 1.5 years. He's had it aligned 3 times in 5 years and it still just chews the outside fronts to bits. Every single one of them has had the CUE screen replaced. Even the cheapest shocks on these things are $300 per shock. Just stating what I've experienced. This is the reason I'm not driving an ATS coupe. I absolutely LOVE those cars, but I work on cars and I'd never buy one.
Stating that, everything I buy is based on my work with cars. I love Audis, but they are a pain in the ass to work on, so I'll never buy one. I'm super familiar with Ford, so that is the bulk of what I buy. If I had to pick out of any of them, It would be the Lexus, especially since it being "too slow," will only be noticed on the track, I know it's lacking in torque, but it's so negligible on the street, and IMO, it's just such a different car to the Germans there's really no point in even comparing them.