I bought the M35-S159 and I like it thus far. I have not been able to really take it anywhere just yet, since I just bought it about a month ago. I love the widescreen, the display is very nice. The battery time is great. I can usually get about 3-4 hours depending on what I am doing. Running high end graphics, probably will make that go down a bit. I have not run any games that require the use of the graphics card, so I am afraid I cannot comment on that.
One downside I have run across is the sound. For some reason the computer does not recognize the SigmaTel Audio card. I have to uninstall and reboot the computer. I think it is related to a Power Saver error though. I doubt that it is a commonality amongst the computer model though.
I bought mine from Circuit City for only 1450 after mail in rebates, which I thought was a good price. I was also looking at an Emachines and a differnet Toshiba. The M35 just mixed the pros of both and costs little more. I would recommend the model to someone, but then again, I have only had mine for about a month.
Thats my 2 cents.