Do we really need another thread polling for opinions? I'd suggest clicking on any green SDS100 topic filter as shown here and scrolling through to find the many many many similar threads. This will filter many of the reviews, questions, issues, concerns, etc for your perusal. With that said, I love mine
I've had mine for maybe a year.
Never any hiccups, or issues. Programming is a learning curve coming from whistler but i got it after awhile(lots of videos watched)