I left Q for another larger comp this year. Based on my experiences, Id say that if u are an early career professional, Q is a good place to be- lots of online learning and good name on resume. If u r mid career - unless u are really well comped ( unlikely) or u have an aspiring manager - u are going to meander about without any destination or growth. I would not spend more than 2 years unless you are due a promotion.
If you are above 50 and can snag a senior staff or principal/director position, u have likely a good career path to a safe retirement :-)
If you are in Bay Area, you should look around- since (as i found) Q has a reputation with no real customer products except expensive chips and seem to have expertise only in rf/cellular. No one likes the licensing model. Rest is meh. Other more balanced companies can lead to to faster growth path.