personally the two I would go for are the one lifting under the head stock as it gives freedom to work on the fork legs. otherwise the other is he fork leg bottom one. you can get an Abba lift which works on the swing arm pivot but Im always wary as being adjustable (one size fits all) it could spread apart. also lifting front end is better for longer working time.
http://www.demon-tweeks.co.uk/motorcycle/front-stands
many to choose from I would go for the Bike Tek or Sealy style box section fork ones or the MotoGP head one on page 2. the warrior head stock one looks a bit flimsy.
if you can afford it, Harris do really solid ones.