Acadia, Home One have a reasonably contempory kitchen and living room.
PICK (from RDNA I thonk) have excellent bathroom and "general" room creation sets.
Masses of modern furniture can be picked up for free.
Try Poseruniverse for starters  http://www.poseruniverse.net/Models/Models.html
You can also get ultra-realistic white-goods for your room (dishwasher, washing machine, mocrowave etc.) (not for free)
What I'd like is a modern room complete with furniture, carpet, curtains, electrical appliences, moveable walls/ceiling, that loads in one go.
I do however enjoy making my own rooms from bits and pieces.