Pros
I've never worked anywhere that has this many positive, happy people who are so invested in the job they're doing. Being around smart people inspires me. The company is young and hearing about future plans and strategy, I can't help but be excited about all the possibilities around the corner. I've also never had a CEO that has been so approachable, so willing to discuss transparently where the company is headed, and who is genuinely excited about not just the big picture but is someone who takes the time to recognize the work of his employees at every level.
Cons
It's a small company who recently had a lot of necessary staffing changes to ensure a positive company culture and to make sure that it has the right people onboard to go where it needs to go. At every company (big and small), changes bring about fear to those who choose not to try to understand what's going on and some don't handle that well...at a small company, you stand out if you don't have a good attitude, which also means the positive people can more easily feel effects of the negative ones (even if there's only few of them).