Can you do a little comparison between the herpstat intro + and the VE-200D?

I've heard good reviews from both but don't use either on my racks. I know I wanted a good thermostat for my incubator because if the big girl I'm picking up in a couple of weeks does lay eggs for me, I want to be prepared with a working incubator that will hold temps perfectly. In order to have that, I need a thermostat that's top notch. I just don't know enough about either of them to really be able to pick between them.