Here's the survey from Tire Rack for ULTRA high perf all seasons:
http://www.tirerack.com/tires/surveyresults/surveydisplay.jsp?type=UHPASWTF ARE: Avon Tech M550 A/S They are ranked VERY highly
CHEAP PRICE
And the Pzero Neros have fallen in price since the last time I shopped...
Any advice based on the survay above?