Newb here - please be gentle.
I just finished assembling the
DSO 138 oscilloscope from JYETECH, and I'm pretty happy about it. I have the "K" model where you need to solder on all the SMDs.
A few things have scared me off of using my Rigol DS1054Z with circuits that I power with my DIY benchtop power supply, and the DSO 138 is pretty much disposable, so it's given me a bit more confidence. I can use the DSO 138 first, and then use my Rigol without fear.
Anyways... just wanted to share that.