Well, like all things in life, you are going to have to compromise. You can have everything but the integrated DVD if you choose the Lenovo X61 (including the 7200rpm hard drive option). If you can sacrifice the low weight requirement, the Fujitsu T4220 is a great choice. You get all the things you ask for, plus if you want to removed the modular DVD and replace it with a 2nd battery you can have the best of both worlds. You third choice is the Toshiba M400 but low weight doesn't apply to that machine.