Looking for a decent lightweight mid range laptop. Something with a 14" or 15" WXGA or similar screen, core duo processor, 1-2gb ram, 80+GB hd, and ability to run Vista.

Primarily use for business machine to run Office, Outlook, and possible some small development with with VS2005 and doing demos. Needs to be portable as already have a desktop replacement style Compaq laptop that is too big/heavy when travelling.

What are some good makes to look for in this range? Acer? HP? Dell?
Any good deals on now?