Pros
I really enjoyed working here. Everyone got on well, and while I understand there was a modicum of inter-office drama it was nowhere near me and anyone else with whom I worked. The work-life balance was great for a start-up, which was a bit of a happy surprise. The device is a great piece of technology, and I always felt that everyone, from the top to the bottom of the company, felt committed to its success.
Cons
It's still going through growing pains from being a very-small-startup to being a small-startup, and there's a sense that management is at times too focused on external marks than on keeping the employees informed of all of the ins-and-outs that are happening, or making sure that bonuses come through in a timely manner, etc. You need to be comfortable with a bit of flux there, and with some occasionally shifting priorities.