Opinions on an oscilloscope suitable for hobby electronics on a budget
You don't mention exactly what work you do, but a good digital storage oscilloscope (DSO) will last you a while (and I guarantee it won't go out of date for a while). Sure, you can grab a secondhand Tektronix analog oscilloscope, but my storage scope has saved my frustration bacon more than once.

I have a Rigol DS1052E (a good review from a proper electronics engineer is here) which is a 50&nbsp;MHz 1&nbsp;GSa/s scope direct from the factory; they are about AU$675 on eBay. In my opinion, they are the best high-end hobbyist scopes on the market; considering what you get for the price I wouldn't trade mine for anything.