Its all down to how much you intend to use it and how hard you use it. My meddings would go on forever used every day in a factory, a cheap drill would only last a few months used every day then it would only be good for scrap. A diy drill will only be used a few times a year just to do a bodge job, so you can buy a cheap drill and if it falls apart you lose about £200.00 pounds or less. With me if i no longer need it i hope i will make a good profit on my £380.00 drill that will be as good as the day i bought it. when i started my hobby i never thought i would be wearing out all my nice new shiny tools and buying lots of old ones, well i have learnt the hard way.