I picked up a Tektronix 2215A last year for $100 off of Craigslist. I am just starting to need to use it.
The scope is bit larger than I'd like with my current setup, and I'm debating selling/donating it and picking up one of the sub $200 USB scopes.
I think something like the DSO Nano or a USB scope would suit me fine for quite a while. Any good reason why I should reconsider?