What do you Guys think of Auto Jump Starters?

Hi everyone,

This is my 1st post here. I was wondering what you think of Auto EPS Jump starters (http://www.bakth.com/cat/car-jump-starters/28)? Our company is looking to increase our range of jump starters, so i was wondering what the general feeling towards them is; have you encountered any issues when using them etc?

Any feedback would be much appreciated.

Mark