I wanted to watch a lot of analog data faster than Arduino's or MCP3208's could manage, so I ordered a Hantek 1008B a while ago.
Since I decided to use it for the HexPi and TBMST tests, I decided to write a review before using it - figuring that if it ended up being useful to me, it may be useful to others.
For your reading pleasure: http://www.mikronauts.com/reviews/hantek-1008b-oscilloscope/