Those were in my line-up! Those, these, and these. I leaned towards the long-skinnies because (1) they seem to milk more angle; (2) they're compatible with my laptops, which have small strips of flat plate. I only didn't choose that last one because it's too expensive ($50 for 4); but it does give the largest angle, and looks very sturdy. Oh and it doesn't have a rubber tip, I'm sure it'd slide a bunch.

How do you like yours? Does it give enough tenting?