All of my primaries have spigots about 1/2" from the bottom of the bucket, which at times has been too low. Regardless of getting a little bit of yeast at the beginning of the transfer from primary I have to say it is a HUGE time saver, especially if you use a sanitizer that requires rinsing.
Primary: Edwort's Apfelwein
Primary: Brewingcentres Pale Ale
Primary: Brewcraft - Cheap 'n' Shiddy Bavarian Wheat
Kegged: Brewcraft - Cheap 'n' Shiddy Bavarian Wheat
Kegged: Brewcraft - Enhanced Dutch Lager
On Tap: Brewcraft - Irish Stout