i been playin guitar for 2 years and im gonna get a bass. i found a cheap one im gonna get, and its 250 for the bass, with a bag, cable, and 15 watt amp. or i could get just the bass for 165, and a 40 watt amp (same brand and model, jsut bigger, for 170. so basically, should i get the one with the small amp for 250, or the one with the big amp for about 330? whats teh deal with wattage one bass amps, is it about the same as guitar?