How well the car rides after a shock/spring install will largely depend on the wheel and tire package you're running as well.
The guy running a 15" wheel with a quality tire is going to have a lot more side wall to absorb the rough stuff than the guy running 17" or 18" wheels and rubber bands for tires.
My ride got considerably rougher when I went from the stock 16" Pony's with 225/55/16's on them to the short, narrow side wall 17x9" 255/45's and 17x10" 275/40's that are on it now.
There's always a trade off. Looks and handling improved, but ride quality took a dump.
The guy running a 15" wheel with a quality tire is going to have a lot more side wall to absorb the rough stuff than the guy running 17" or 18" wheels and rubber bands for tires.
My ride got considerably rougher when I went from the stock 16" Pony's with 225/55/16's on them to the short, narrow side wall 17x9" 255/45's and 17x10" 275/40's that are on it now.
There's always a trade off. Looks and handling improved, but ride quality took a dump.