I voted varies. It really depends on the trip. Last year, we stayed in a 1 bedroom at BCV. We found we did most of our eating out -- even breakfast. So, this upcoming October, we're going to try a studio at VWL.
The one "consist" in our travels will be HH. We will always get a 2 bedroom as we spend a lot more time in the villa. It's nice to be able to spread out. At WDW, we haven't found we've been cramped (yet). Our kids are 3 & 8. I'm sure as they get older, the studio won't be an option for our family.