Which Samsung Printer Toner am i supposed to pick?

Hey everyone, I was wondering what Samsung toner I'm supposed to pick. When my printer prints, the quality of the print has less color, so i assume it is almost out of ink. So, I was wondering, do i get the toner which is this

http://cgi.ebay.com/Samsung-ML1740-ML1710-ML-1710-ML-1740-ML-1750-Toner_W0QQitemZ140231380187QQihZ004QQcategoryZ9930 2QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

or something like this

http://cgi.ebay.com/3-Pack-Samsung-ML-1710-ML-1750-ML1710-ML1750-ML-1740_W0QQitemZ330234701638QQihZ014QQcategoryZ99298 QQssPageNameZWDVWQQrdZ1QQcmdZViewItem