Whats the best perennial grass seed

[wishing for walleyes]

Whats the best perennial grass seed to thicken your lawn.Looking for what grows the best by just sprinkling it on the yard.

[Quetico]

The short version? Go out and find some kentucky blue grass if its a sunny area or fine fescue if its a shady area. Avoid bulk bins or any cheap seed for that matter. If you can find a bag without any perenial rye grass that would be prefered.