X41t Battery Debate

[Bibin]

So, I have the 8-cell battery. I think the extra grip space is kind of neato, but I am thinking the smaller size and reduced mass of the 4-cell would be nice.

4-cellers, do you have any experiences to share or any first-hand account of the difference noticed? Is it much lighter? I had an X40 before which was delightfully light but the tablet is so nice... it would be good if it could be as light though.