Pros
Brainspace is a fun place to work especially in Dallas. I've been in the startup scene in Dallas for several years and no gets culture like Brainspace. When I joined a couple years ago I was a little nervous about losing the vacation time I had built up, but was surprised to hear they had no vacation policy. You leave when you want to leave, just make it work with your team. I like that and it works. The software is cool and we are all pretty motivated to work on it. I'm a developer and most companies I've been in the sales guys are annoying. That's not the case here. Some of them are actually pretty competent and help us understand how our product is being used (or not). I don't mind working late when my team does and we do help,each other.
Cons
I think the culture is going to be tested. We were bought late last year so it will be interesting to see if the culture survives. We lost a couple people, but I wasn't too surprised who left. Time will tell.