Chillselalu,
Jules is RIGHT.
Let me see... You value comfort, but you've just put in 18" rims.
Next, you want to ____ your car, but still want comfort.
.........................lower
So, basically, you are going for a certain, as Jules so nicely put it, optical effect. Just wondering. Why do people think big rims and lowered cars look 'cool', but do not want the ride comfort to be affected?
Here's another way to achieve the look you want whilst not sacrificing comfort. Carry lots of fat people. All the time. That way, your car will certainly be lowered, and ride comfort will not be affected much. Cheap too - only costs extra fuel consumption.
No? Then, here's a thought. There's absolutely no way to 'lower' a car without sacrificing comfort. The springs need to be harder to compensate for the reduced travel (people who simply cut their springs would have learnt this the hard way.)
Understand why lowered cars look cool. Where did the look come from, racing cars? Racing cars are lowered for a reason. To lower the center of gravity. To reduce body roll while cornering. To create a vacuum under the car to increase roadholding. To look cool for the cameras. Oh wait. Strike that last one out.
And racing cars are HARD.
So, what should you be looking for? Decide carefully exactly what you want. Purely looks? Improved handling? Comfort?
A car's suspension setup is an exercise in compromise. Lowering the car for looks also improves handling to a certain extent, but compromises comfort, and vice versa. The latest suspension systems tries to straddle the best of both worlds by dynamically altering the stiffness according to the driving situation. Great, but expensive.
After you've figured out what your priorities are, look for a compromise that you can accept. The lower the car, the harder the springs, the harsher the ride. So, maybe you should try some lowered rides, and see what level of hardness you can tolerate.
By the way, your ride comfort is already affected; by your eighteen inchers.
Good luck in your quest.