My OEM Conti tires were due for a replacement so I started hunting for new ones. ~$1400 seemed a bit high to me for tires so I did research over the course of a couple of weeks and ended up purchasing Nexen Roadian GTX tires. These are relatively new tires from Nexan and only cost me $571 (including tax) for 4 tires. I had them installed last week and took a 400 mile roadtrip the very next day. I was VERY impressed with the grip, ride, and quietness of these. It was a misty and windy day so I can’t speak about the efficiency but they are supposedly very good in this department. Got them from CWO Tires and Wheels (through eBay, where you can get a better deal by buying them in pairs). 70,000 mile tires, but we’ll have to wait and see about that. I’ll update this thread over the life of the tires to let you know how they’re holding up.