????WHAT AIRSOFT GUN SHOULD I GET?

i just took back my m3000 smith and wesson shot gun and got theexact same thing i thought the first one had a problem because the bbs fell out so im thinking about going back to the store a third time to trade it for money and buying one online is the r39 crossman defender elite kit any good which one is stronger or better for range and power something that is cool ill buy anything under 70$ as long as its an airsoft gun maybe one with some accuracy