I use the FREDRIK desk from IKEA. It is adjustable, it is a standing desk, and does not look like it should fall apart anytime soon - what more could you ask for?
I switched to a FREDRIK after the previous HN discussion on standing desks. In general, I am quite happy with it, but some notes from my experience:
You cannot adjust the height of the shelves without taking most of the desk apart. The increments are fairly course, so it may be difficult to get the height right -- I had to dig up the riser which came with my Microsoft Natural keyboard.
I use it with an IKEA bar stool and often switch between sitting and standing a few times during the day.
I will second this. Make sure you're looking at the $150 Fredrik "Computer work station", not the $100 Fredrik "Desk". The Fredrik has extremely solid steel support. I've used it for over a year and a half, most of that time as a standing desk, and have disassembled and reassembled it at least a half-dozen times (for height-adjustment of the desk or shelves or for moving). It holds the weight of a 24" iMac, a second display, a stereo receiver, and two shelf-lengths of books with no bending or bowing whatsoever. I even have a habit of leaning on it when I'm not typing, and it's held up to it perfectly.
That looks very interesting (particularly as it's a desk which is widely available across countries) but 98cm max-height seems a little short for a 6' 2" guy like me? I'm assuming that you elbows should still be at right angles (i.e., that the same rules apply whether sitting or standing)
You cannot adjust the height of the shelves without taking most of the desk apart. The increments are fairly course, so it may be difficult to get the height right -- I had to dig up the riser which came with my Microsoft Natural keyboard.
I use it with an IKEA bar stool and often switch between sitting and standing a few times during the day.
picture: http://www.flickr.com/photos/kuno/5053375629/