I am also surprised by CSG's curt reply. However you guys are not asking anything that hasn't been asked before or discussed for hundreds of pages, I wouldn't take the posts today as final answers, go get a second opinion through your own research and evaluate your priorities to come up with a more accurate solution.
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yamsta I'm no expert but you're experiencing a lot more roll and I think CSG is correct in attributing it to more grip, however I would investigate some aftermarket sway bars as a first step before dropping $1k-$6k on coilovers. They won't be a wholesale replacement but since you're driving your car casually for fun it may get you what you're looking for. Another cost effective solution maybe the spring kits available although they do have their drawbacks, I know you say you don't want to lower the car but it may be the best compromise for what you want.
Precision will only come from stiffening everything up, removing the slop at the cost of NVH (bushings and stiff springs/coilovers) which I doubt you want to do. I'd have the alignment checked on the car, zero toe in the front (depending on what you had before) may give the car a little nudge in the responsiveness, some toe-out up front will make the front end very responsive but may be tiring for a DD and a minor increase in tire wear. Zero toe rear also helps the car rotate more readily but I found it darty on the freeway (others disagree) and have put a little toe-in to stabilize it.
Lots of variables are in play here