I would agree. Get the balance taps =) A 2s with balance taps is 3 conductors jfyi, 3s is 4 ect. Basically you just add 1 to however many cells there are to get the number of conductors in the balance lead.

it wont cost you any more money if they are on there or not, but if they aren't on there it could cause you some damage to your rc or to your house. Granted 300mAh isn't too big, but as a general rule balance taps are better =)