Guitar Pro: There's such an incredible variety of the things. Do you want to play acoustic or electric? Steel strings or nylon strings? Big dreadnought or a compact 00? Mahogany, rosewood, maple, walnut or maybe even graphite?   Six strings or twelve strings? Feel like spending $100 or $1,000 or $10,000?

Guitar Con: All that variety makes you want to have one of each of 'em. That will inevitably lead to bankruptcy and/or divorce.