Need help with seats

I have those most basic seats and its a 2014 superb. But as im driving taxi with it then i have to sit there alot and i feel that there is really bad lower back support (or there is no). So im thinking here what kind of upgrade would be easy to do?

Option one: look for better superb seats, maybe l&k version? 

Option two: maybe there is possible to bolt on some other seats. Maybe passat b7? Or with small fix something even better?

Option three: something else?

Thanks!