Vantaggi
There are a number of good people who have stuck around through the chaos of the recent acquisition. As long as you don't join a team under the new CTO, you will probably be fine. The benefits are pretty good. The company's HR team is great.
Svantaggi
The engineering and product organization have now become a cult of personality where the primary measure of success is sucking up to the new boss. Saying "yes" to anything that is asked and then grinding the people actually doing the work is especially rewarded. The new approach seems to be use someone as much as you can until they burn out, and then replace them with a new body. A culture of fear and blame has replaced a once healthy culture of professional growth and quality. It is now more important to say your task is done as quickly as possible than to design something that works and actually test it. If it doesn't work properly, then blame the other teams involved. Most of the talented engineers have left and are being replaced with offshore and contractors.