but for 99% of what a DIY-er will do it's more than enough.
Totally agree.
I just get frustrated when my expensive units cark it because I push them too hard (I supposed when I do that it's REALLY pushing them for 1hr+). But I can't take the chance with buying cheap ones.
It's pretty shallow. Much deeper than that and you'll hear the unmistakable crackle and pop of a melted motor.