Re: thinkpads? @cap'n
I think that it depends on whether you are a form-follows-function person or not.
Thinkpads are functional. There is little wasted weight or space, the screens and keyboards are/were the best in the business, they are not too bulky, and they will suffer the day-to-day wear and tear that a road warrior will put them through. And there is nothing in their design that makes them unpleasant to use. The lips and edges you talk about are all deliberately engineered so that when shut, they all lock together, so there is not too much strain put on the hinges. Seen many Thinkpads with broken hinges? No, I didn't think so.
Add to this an engineering, maintenance and warranty strategy that means that they will can and will be fixed if they break in warranty, and have the full maintenance manuals available for third party maintainers to fix them when they are out of warranty, with a large pool of donor systems for parts means that they have an extended 2nd and 3rd user lifetime where you will still see 6-7 year old Thinkpads in regular use (my T30 has a manufacturing date of 2005, and the A20 which runs as my linux firewall is even older).
I'm sure that it you look, you will still be able to buy brand new OEM batteries from one of the auction sites for any Thinkpad built this century. Try that for a decade old Dell or HP.
Of course, if style is more important, then a Sony Vaio or any of the Ultra books will do the job, but don't expect them to have the same life expectancy. But if you are after style, it does not matter if it breaks after 12 months, because you will probably be replacing it for the latest 'shiny' toy anyway.