do any of u use the marshall collars that take AA batteries..i seen a picture of 1 and it looked really light..thought it might be a good collar for beagles or my jack russel....i can buy a sealed collar here for beagles but they cost around 120$....just loookin for a light collar for my jack russel and 1 that if i needed an extra fer a hound i could use..the marshalls looked light..any input..on cost..durability..stuff like that?/???