Here's another opinion on necessary scope bandwidth.

For beginners with PICs, *any* speed should work fine *99%* of the time. Why?

Because the typical use for scopes are far more often "is there any signal
present at all" rather than "are the rise times of this pulse less than 10nS?"

Yes, there *are* applications for high speed scopes but PIC beginners
seldom encounter them. Especially those who also are electronic beginners.

A 10MHz scope will tell you:
        a) do I have 5 volts on the pins where it should be?
        b) is my crystal oscillating?
        c) is my port pin toggling?
        d) is there any data coming in on the serial port line?
        e) what baud rate is that signal?
        f) etc.

A 1GHz scope will tell you all the same things for a lot more money.

Just my opinion...
Good luck!
Tom

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.