If the OP is looking for a new scope that's cheap, here at McGill,
we've been using the PicoScope USB scopes in the EE labs (DSP
Hardware). We trust undergrads with them, and they're a heck of a lot
easier to store (if you have 10 of them in a lab). No knobs or
buttons, just 2 BNC and a USB-B on a white box the size of a hardback
book.
Unfortuantely they are Windows-only, so no use for someone like me
who's only got Mac and NetBSD at home.
And it's quite possible to find a good used analog scope for less, I
think, but a digital storage scope has some advantages...
Joe.