I went with Sumitomo HTRZ III's on the new 18's that I got. I am more than pleased with them. It rains a lot here and I have a race car so I didn't need DOT-R's. I wanted good rain traction, good wear, and cheap. I think I found a perfect balance of those. They are pretty quiet, too. I drive around 20K miles a year so I don't feel like going through $3,000 in tires a year. $600 a year is more like it.
They stick better than Pilot Sport cups.... but that's only because I could never get any heat in them. Max temp was like 45 and I even saw some snow (scary!)
If I was back in SoCal and not commuting 70 miles a day I would go with Kumho XS or Azenis 615.