Each to their own !
Ask ten 'scope owners and you will probably get ten different recommendations :?
The one I use most is a tiny thing with a screen about 1.5 inch square - yes it is a true cathode ray oscilloscope (Thandar - discontinued :cry: )
My big 'scope only claims upto 5MHz (according to the manual) but I suspect its bandwidth is actually nearer 1MHz :shock: , I rarely use this 'cos the little Thandar one is so handy :wink:
It is easy to be beguiled into buying something far more powerful than you require; 250GHz sampling, 500MHz bandwidth, four trace, 100% pre-trigger, PC interface, seperate tea, coffee and beer spouts ... but will you use them (well, the last one might be nice!).
As Stevez said I already have "a 'scope that exceeded my capabilites".