The bristle one in your link looks like the spider could escape if he climbed upwards. The bristles are bunched together to close off the exit at the bottom, but they're more widely spaced towards the top.
Seriously, I find a pint glass really good. Just put it over the spider and press the rim firmly against the wall/floor. The glass is big enough that you don't have to approach too close, and you can see whereabouts in it the spider is. Then just slip a bit of thin but stiff card between the rim and the wall/floor to seal it off, tip it upside down so the spider falls to the bottom (still holding the card firmly over the top in case he decides to climb up... you can always shake him down again because the glass doesn't give him a good grip) and then shake him out the window. I'd never use something non-transparent for fear he'd be poised near the opening waiting to run onto my hand when I took the card away, but a pint glass and a postcard are your only man.