Just bought my car on 7/16 and wasn't a huge fan of the stock interior. Coming from a car with leather, I felt like the seats trapped heat and were too soft. Looked into Wet Okole, Cazzio, etc. but ultimately didn't want any type of seat cover look. After some research, found that a few local shops install Katzkin - one in particular that does all the cars from a local Toyota dealership and is regarded as one of the better installers around. Anyway, here are some before/after images:
Katzkin are nice but you can have just as nice a look and feel with Clazzio for much cheaper. Plus you don't have to rip the factory material off.