Hi Willow, we built our house 4 years ago and decided to go with Vinyl flooring throughout the whole house except for bedrooms rumpus and theatre, we even put it in our bathrooms and toilet & laundry. We love it soooooo much in fact we love it that much that we also installed it into our rental property when we renovated it.

We went with Karndean planks at our house. There are other brands though. I think that Karndean are one of the more expensive brands. We used a cheaper brand in the rental I cant remember the name of it sorry but it has worn well.

We have not had any problems with it at all, its easy to clean etc and if i ever built or renovated again I would definantly have it on my floor.

Everyone who comes to our house always comments on the floor, initially they think its wood and are so suprised when we tell them what it is, we have to actually show them a piece so that they believe us.
Personally I would not go with floating timber as it is softer and marks/dints easier. If you damage a piece in the centre of the room you have to lift the whole floor from the edge of the room to get to the piece thats damaged but with the vinyl floor you can cut out the piece thats damaged and replace it with another its that easy.
Sorry to carry on about it but I love it cant you tell.