Welcome to the forum! Do you have FWD or AWD? That will affect timing of tire replacement, as AWD should have identical tires on all 4 wheels for best performance. Wheel size?
Tirerack's ratings are pretty spot-on. Unless you want winter tires, the best liked all-season tires include the Continental CrossContact LX20, Yokohama Parada Spec-X, and (I believe OEM) Pirelli Scorpion Verde.
http://www.tirerack.com/tires/surveyresults/surveydisplay.jsp?type=CSTAS
If your wheels are 18" or less, you could go with a winter tire, though those usually have no treadlife warranty.