I am struggling with the same type of situation ! DH and I have two boys ages 3 and 8 as I know you have little girls. We constantly struggle with the studio vs. 1-bed now. We spoiled ourselves with our first trip as DVCr's in a one bedroom (BWV) .After staying in a regular hotel room....it's ..WOW !! Two TV's, Kitchen, Our own room while boys can watch the Disney Channel in the living room ( or in our room) Whatever....it's just so nice !! Not to mention the jacuzzi, walk in closet, two sinks, etc....
Then...our next trip we went to a studio (BWV again) . We figured we spoiled ourselves the first time but a studio would compare to a regular room..right??? While we enjoyed our stay, after all we were in WDW! It just wasn't the same as the 1-bedroom !!
NOw, for our trip this year , I have a studio booked buy everyday I think about calling and upgrading to a 1 -bedrooom...it's just I want to save pts for another trip the following year with family!!( LOL....more points needed!--maybe in a couple years)
The moral of this story is...........had we stayed in a studio the first time....we , like you, wouldn't "know any better" so unless you are prepared to be "1-bedroomers" from now on, I would suggest excerting some discipline and sticking with the longer stay in the studio.....
Good luck with your decision!!