I love me some Jones market. As there is a dearth of Russian/Eastern/Central European restaurants in Las Vegas, Jones is a life saver. I miss my Polish food and Jones gets me through by stocking such favorites as Profi pasztet (Polish country style pate), Delicje (chocolate covered biscuit cookies filled with fruit), and Prince Polo (chocolate wafer bars).
The selection for Polish food is better at the Polish market (duh) but Jones is closer to my house and is gigantic. I think Jones is targeted more toward Russian/Balkan products but, that's fine by me, I love to buy it all. Also, my boyfriend regularly cleans Jones out of their Serbian pickles, stuff he buys by the carload (they are the best ever). If you're scared to try the typical groceries, you cannot go wrong with Milka and Kinder chocolate and their tons, TONS of delicious European beer. Nuff said.