Oscilloscopes - what specs to look for?


Hi,

I'm gonna get me an oscilloscope. I'm going to use it to mainly fiddle with home audio equipment, like hifi amps, and perhaps try to fix this and that other electrical appliance. 

What should I make sure I've got covered?

Some say 50Mhz is good, others 100Mhz. I've also realized memory depth is important, but what is enough? I see oscilloscopes can easily top the overall price of my hifi system if I'd really want to. 
128x128eyrepm
Thank you all for the help! I ended up getting a lightly used Rigol 1054z. And yes. You can hack it to unlock 100Mhz, increasing from 50Mhz, more memory (24M) and some advanced features. 
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If you have a computer, just get the software and a set of USB or Bluetooth oscilloscope probes and you’re all set. Way cheaper than a real electronic ‘scope.