I went through three of those back in the day. The hardware isn't... terrible, but I certainly wouldn't recommend it as a daily driver today.
(The radiation you interpret as "quality" is actually mediocrity, they can be hard to distinguish sometimes.)'
(Edit: Okay, in fairness only two out of the three broke. One was a 600, not a 650, and I was upgraded after a year because for some reason the custom software we were using for corporate email syncing made a 650 the minimum spec after a version rev. The first 650 lasted a little less than a year before just "bricking", and the second one... I think I got almost two years out of it, but for the second of those years the camera was broken in this awesome way that made it produce bizarre green-tinted "Predator Vision" pictures and video. Then one day it just randomly nearly caught fire in my pants pocket and that was the end of that.
Edit, again... maybe the PredatorVision one was a 700p? I forget, they all run together other than I remember the 600 had the Color GameBoy-res screen while the later two had the nice high-density one.)