Just a couple comments. If one fridge is 10% to 20% more efficient than another...what does that really cost you a year? I think my french door was something like $47 a year per the sticker. Is it really worth squabbling over $.40 or $.80 a month?
Next...everyone has their own particular uses, types of things they regularly like to store ect. I've had every type you can get...old "freezer on top", side by side, french, and dedicated fridge and dedicated freezer.
Each one has their own pro's and con's. Personally the french doors are one of the better designs for my day to day uses. I do spend 90% of my trips going to the fridge. Milk, condiments, eggs, salad stuff, sandwhich fixings, left overs, ect. All come from the fridge. Everythign is at eye level, in easily adjustable shelves, with innovative storage trays/door shaping. I love being able to stick an entire sheet cake or large serving platter or baking sheet in there. Can't do that in a side by side. And I like the "freezer on bottom" pull out drawer style becuause I tend to have a ton of smaller items that usually end up falling/sliding out of a normal freezer on top style. The french doors are also nice in smaller kitchens because the doors don't swing open as far.
LG and Samsung are decent brands with some of the more innovative/useful storage/layouts. I picked mine up for cheap at a scratch and dent sale at Best Buy. My only major complaint is if you are lazy and used to just flipping the door closed, that's not going to work with many french doors. They don't have enough weight to self close sometimes and you won't get them shut all the way. My wife was notorious for that. At least it beeped at you that it was open.