Dell aside, I think we should wait and see what Lenovo does with the IBM brand.
I always thinked that IBMs are simply the best notebooks around. Very well built, very well designed from the ergonomic side and being minimalistic but filled with really useful options.
However, I always had some complaints about it. For example:
The lack of Windows keys is a big pain to me as I am used to open the windows explorer, search, system properties and such with shortcuts. Lenovo added them wich I really like.
The fact that Thinkpads have almost always been behind other brands when it comes to graphics power. I understand that those are business machines after all and that a more powerful processor will ruin battery life, but hey, that's a decision the customer has to make, isn't it?
Now it comes to the fact that, unlike Dell, IBM almost never makes modular designs. They have the video card soldered into the motherboard, so if one of both things fails, repairs are much more expensive.
Finally, the fact that IBMs are so damn propietary. I couldn't change my wireless card and get my machine to boot!
Hopefully, Lenovo being more customer focused will get rid of most of this things. If you look at the newer Thinkpads (T60p) they are extremelly tempting. There is a 14.1" version with SXGA+ and FireGL V5200. I am still not sure wich Radeon is equivalent, but knowing that the V5000 is the X700 equivalent and the V5100 is the X800 equivalent, I suppose it really has to be very good.