This thing battles along really well. I am surprised. It has built a lot of stuff since I have bought it. I probably have over 50 hours of operating time behind it now. It has helped me build some beds, desks, storage boxes, shelves and a garden. My only complaint is that it only comes with one battery - make sure to order a second one so you don't end up being forced to take breaks - ESPECIALLY IF YOU ARE PUNCHING THROUGH METAL OR HARDWOOD/COMPOSITES!
I did notice that the drill can get quite hot. I read a few reviews that say units burn out. I think if you do not pay attention here you can kill the drill if you are not careful, the good news is, it does not get hot often, and when it does it does not take long for it to cool back down with the way the vents are set up.
My advice is - if you want something really heavy duty you may want to get a brand better known for that. Dewalt for example - will be a much sturdier drill than this. However, if you want a cheap drill that can get you through projects - get this one. Pay attention to the heat like you should with anything and you will be happy.