...I was never a Ford fan and was never too keen on most of the models of Mustangs throughout the years - I've owned 2 Camaros (still own 1) grew up around Chevelles/Corvettes/Camaros and lots of GM cars (Cadillacs/Chevy trucks and SUVS/GMC Trucks/etc.) so I would def say I'm a Chevy/GM fan.
However, when I needed a "new" car as I didn't feel like driving my modded Camaro 60+ miles on the highway every day, I immediately fell in love with the LS. I looked at Cadillacs but something just kept me going back to the LS. If you ask me, my LS has quickly become my favorite car to own. Sure I've had problems with it, but I have had plenty of problems with GM cars too. I love the styling - it's aggressive enough but also comfortable and with a few mods it can look even better. I love Corvettes (almost bought 1 but went with a Camaro instead) and have driven many but that one is beat and I don't know everything about that car or your car, but give the LS some time - it may grow on you...