Have 30,000 miles on same General tires you mentioned, they appear now that they will easily surpass 50,000 miles. I rotate them every 10KOddly enough, despite being an "Economy brand" of Goodyear, I'll put anything Douglas on long before you could pay me to put anything Goodyear on a vehicle. I have never had a Goodyear tire that wasn't garbage.
I won't touch anything Firestone either, they tend to last forever, but they always ride rough, they're always noisy, and they always tend to be terrible in winter.
Same deal with Kelly tires. Some of the noisiest, worst riding tires I have ever experienced.
I however swear by the General Altimax RTs for an all around all season tire. They wear wonderfully, ride wonderful, are quiet on the highway, and are amazing in the winter. So much so that since I got summer wheels I just continue using the Altimax RTs as my winter wheels.
I prefer them to the more expensive Michelins and Continentals because they don't get noisy and lose traction as they wear, which is something every set of Michelins or Continentals we've had have done. They're always amazing when they're new, but once they get under 7/32 tread they become noticeably noisy and they lose a noticeable amount of grip for winter/wet use. The Generals however stay quiet and keep their grip right down to the wear bars.
My summer tires are Hankook Ventus S1 Noble in a 235/50r19 and they have been wonderful for the last 3 seasons. They handle well, they're quiet, and they have been good in the wet. I intend to have another set installed on the summer wheels this spring when I pull them out of storage.