Re: One speaker or two?
If you're doing really well with a band that plays live, then a head gives you the option of various speaker configurations. Otherwise, 50 Watts will probably be very disappointing, because you'll never be able to play it loud enough to use its full potential ( or even a fraction of it ). This is an extremely common mistake for people who are not used to working in the 50 to 100 Watt range on a regular basis.