Good sneakers for bad knees

Hi everyone !

I'm currently in week 4 of FB Fit and I'm loving it ! I have good endurance and I see that I'm getting stronger BUT my knees are not super happy - I also suffer from femorropatellar syndrom so it's not something new. I have been looking for years for the best shoes to do HIIT training and I was wondering what kind of shoes works for you (price range : 40 to 80 dollars) ? (I usually get Asics). Thanks :)