CR-10 is a good printer, hard to beat it out of the box, it has some clones, tevo tornado being one of them, both have some advantages and disadvantages, the cr-10 bed heat is really its only disadvantage, a friend of mine has one and it takes a long time to get to abs temp, i have the tornado, it comes with a extruder that can print flexible filament, so no need to upgrade, my friends cr-10 did not have a extruder at the time he got it, that could print flex, and the tornado has a AC heated bed, instead of a DC bed like the cr-10 and pretty much every other lower cost printer. the bed on it heats up to abs temps very, very fast, but tevo dropped the ball in another place on it, the one i got, not sure about current models, has a very weak y axis motor mount, that has a tendency to flex, and the bed of it is a ceramic glass instead of aluminum like the cr-10, so it is much heavier, and having to make rapid directional changes can cause the belt for the Y axis to slip messing up your prints, it is a easy fix with a printed support, but it is very worth mentioning, had many a failed print myself and didnt know why until i found that, after i printed a mount for it, i have had zero problems. The company behind the cr-10 is much better with support from what i have heard, the couple of times i have needed support from tevo they have handled it quickly, so my personal experience is, they are also good, but i have heard that they can be slow.