What kind of racing seats should I look for and what to look at?

OK, I want to buy racing seats for my car, What should I look for? What should I be aware of? How can I tell if the seats are rail mounted or if they use side brackets? I am not sure what brands are the best or which ones I should stay clear of. I am not looking for the "best" necessarily, but the best bang for my buck as cheap as possible. I am looking for something that's both stylish and comfortable. ANY advice would be appreciated, oh and idk if this helps but I'm trying to stick to a black and red interior color.