Depends, are you looking for fun or a relationship? The one you have fun with wont last and will likely end badly, its a superficial attraction, a superficial feeling and therefore a superficial relationship, if that is what you are looking for, then there is your bulls eye. But beware, those types of relationships usually end badly.
If you are looking for something long lasting and meaningful, go with the other girl, you have an emotional bond with her, the relationship will be built on a foundation and if it goes belly up you are more likely to stay friends or at least friendly.
It is possible that this fun girl who plays around appeals to you because you prefer the other girl but are afraid of being tied down and so are drawn to someone you know it isn't going to last with.
And no, no one cares about your onion bagel, I suggest its your wallet and holiday money you hold onto XD