ST Coilovers would be similar build quality (also made by KW) but comfier for daily driving.
They are about $500 cheaper, too.
Downside will be no rebound adjustments like the higher end KW's (and the Greddy's), and are more like a budget KW V1, but not a big loss if you are purely going to daily the car and not care too much about tuning suspension.
ST's have a progressive spring instead of a linear spring, which again, not as great for track duty, but comfier around town.
Now, if you want the linear springs, the rebound adjustments, and KW build quality, then the Greddy X KW sounds like a solid Choice.
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