I built a new system with one of these last December, and it has been a great experience for everything I have thrown at it. I wasn't sure whether I'd stick with it or upgrade later - I mainly got it just to "get into" the Ryzen ecosystem, as this article suggests many do - but so far I see absolutely no reason for anything more.

One thing I didn't realize at the time is that the 3000 series is "end of the line" for B450 motherboards, which should be a real consideration for anybody eyeing a new system with this CPU now. As this article suggests it leaves you in an awkward spot. I opted to upgrade there to a X570, but only barely; a lucky decision, as it turns out!