Why not have the best of both worlds ? A nice home setup and a laptop as well. Laptops are nice but I don't think they will ever be able to rival a true desktop experience. Their keyboards are cramped and their screens often get tiring to look at. I've got one and another on the way but I still use my desktop when I'm at home 90% of the time . Not to mention with a 3-LCD setup I do actually see that boost in productivity that you spoke of.