I've never understood this attitude. One of the only times that the difference between any two tyres is absolutely critical is in an emergency stop situation, potentially saving your life or the life of another. It doesn't matter if your car is a Polo or a LaFerrari, the limiting factor in stopping you is the tyre. Last time I looked, the difference between the best of the best UUHP tyre and the 10th best UUHP tyre in stopping distance is ~10m, which from 60mph is the difference between hitting something at ~20mph and not hitting anything at all.
Fit the best tyre you can possibly fit for the size available. Midrange tyres might as well not exist IMO and budgets ought to be illegal.