I wasn't concerned, HH ... I know my computer collection is a bit excessive. But, also feel it's reasonably well deserved after working for 35+ years ... a good example for the young'uns just starting out.
Back on topic ... I really am looking for the perfect notebook, haven't found it yet. I'd give the Envy +++ for style, the MacBook Air +++ for being thin (and running OSX), the Dell 1330 for having killer performance in an albeit slightly heavier package, the Asus U6 for power and performance in a tiny package, but my heart still goes out to the m15x for a killer gaming machine in a reasonable package
All of the notebooks you talk about are killer in their own way, and no single ultra-thin notebook will be able to meet the needs of everyone. Some come close, but can't so it all...
I do not have a need for an ultra-thin at this time, but I do have a need for a replacement notebook for this m5500. To fill that void, I am seriously looking at the m15x.