Incredibly friendly and helpful service combined with delicious pierogies, you really can't go wrong here.
My favorite pierogies are from Pierogies Plus, however this place sells wonderfully wacky variations and it all tastes great. Pierogies Plus will always be my go-to for authentic fresh pierogies, however Cop Out pierogies are still fun and delicious.
I'm not sure why they sell mostly frozen pierogies, but if you follow their cooking instructions you will turn out with great pierogies.
They gave me some free samples to try, namely Reuben pierogies. I really recommend the spinach feta, they are great!
They also sell haluski, which I'd like to sample one day.