The funny thing is, default is the only one that feels "like home" to me. It's been the style since the days that Eric "ran the place," and without it it doesn't feel like I'm visiting ENWorld, if that makes any sense.
As they are my children I have to say I like all of them some (except Blue Screen of Doom - that was an April Fool's Day gag that sorta hung around). I tend to rotate between them and give them all equal attention.