My favorite is still the blue seal....have one in the fridge as we speak along with sauerkraut. Never been to Gawrons so I cant help you there. My 100% hardcore polish mother in law will tell you Janeks is the best.....but.....um....lets just say I didnt care for it.
Fall River has several good places.There's a a couple off of Brayton Ave.Gene's and a place right next to Katrina's Bakery that I can't recall the name of.Also a meat market on the side street just past the mall,Lisbon St. I believe.