Firestone Firehawk INDY 500. Performance wise they are not far off from Michelin Pilot Sports but much more affordable. Currently running the INDY 500 on my wife's car the tires have really good feedback, very sticky especially around corners and minimal sidewall flex also excellent in the rain going to pick up a set in March for my car. Second choice for affordability and performance would be the BF Goodrich g force Comp 2.
Now isn't a good time to buy summer tires best time is in March/April as manufacturer rebates all hit at that time.