As a new owner, I just went through the same thought process on getting new tires. My 84 with 48k miles handled poorly with the Goodyears. I read everything I could here and on TireRack.com and ended up buying the Firestone SZ50's. It made it into an entirely new car and I couldn't be happier! I visited all the tire places in my area and got lots of different opinions, but I'm glad I spent a few extra $ and got the SZ50's. It hasn't rained yet here in New Mexico since I got the tires so I can't comment on their handling in the wet (the reviews say they are great), but the low road noise and better ride and grip have sold me!
Richard