I tested all 3 torrentz direct link scripts available here:

torrentz.com OnClick Download -> http://userscripts.org/scripts/show/13346

Torrentz.com Direct Download -> http://userscripts.org/scripts/show/6998

Torrentz Direct-Download v2 -> http://userscripts.org/scripts/show/42423

This was the best working script of the lot ... "Torrentz.com Direct Download" & "Torrentz Direct-Download v2" did not work at all for me!

"Torrentz.com Direct Download" inserted a "D" for direct links that did not work and "Torrentz Direct-Download v2" did not create any direct links at all.

I prefer to download my torrents usually from either mininova or thepiratebay ... "torrentz.com OnClick Download" direct links for thepiratebay work where as mininova direct links unfortunately do not work :(

I do prefer the inserted "D" link that the "Torrentz.com Direct Download" script uses rather than the "highlight" link that the "torrentz.com OnClick Download" uses as the "highlight" link does not leave a site link active ... The "Torrentz.com Direct Download" script gives you both the "D" direct link and the "Default" site link ... the "torrentz.com OnClick Download" script converts all links to direct links without leaving "default" site links as an option ... this would be handy for cases where the direct link does not work!!!

Overall this script is quite usable althought I would like to see mininova direct links working as well as the "default" site links retained as well rather than overiden by the "highlighted" direct links!

Other torrentz.com scripts that I like:

torrentz.com More Comments and Description -> http://userscripts.org/scripts/show/20894

Torrentz IMDB Rating -> http://userscripts.org/scripts/show/34961

Torrentz.com YouTube Trailers -> http://userscripts.org/scripts/show/54152