- Decent coilover setups can be had for $1400-$1500 nowadays, which includes pillowball tops that would be an extra cost in a Koni + springs purchase.

- Those pillowball tops very often offer adjustability for a more aggressive alignment than a stock setup usually allows.

- Pillowball tops may irritate the hell out of you. They clunk. If not today, or in the first 6 months, they will eventually. You are also increasing noise and vibration transmitted into the cabin through the chassis. Just something to consider if this is a daily driver.

- Most coilover spring rates are high. You can sometimes get them with lower spring rates, but there is often a wait, and you'd ideally want the coilovers revalved for the lowered spring rate. Some coilover manufacturers offer "US spec" products that are geared toward aggressive use with streetability in mind (revalved + non-race spring rates). Just another thing to consider if this is your daily driver.

- And yes, if you SLAM your ride and totally botch your suspension geometry's original design, your car will handle like ass. For any reasonable person, like yourself, this is not a concern.