Do NOT BUY ANYTHING unless you have an emergency. Buying something now is one thing - utterly stupid. Wait for the Windows 8 generation of Laptops that will come out end of October to end of the year. Not because of Windows 8. But because a LOT of new technology (hardware) is coming. CHips husing half the power (Ivy Bridge) and quite powerfull Atoms (Dual core + Hyperthreading). You finally wil lbe able to get Windows Tablets with 8-10 hours range - and I talk of x86, not ARM. Windows 8 is a MAJOR release, and a lof of hardware has been "delayed" to go out in a hugh push.
Where are you buying your lenovos? Look at these reseller ratings on lenovo.com if I buy direct: http://www.resellerratings.com/store/Lenovo