I purchased this e-file as a relative newbie to use on myself when doing my own dip powder and acrylic nails. Given that I'm just starting out, I wasn't too keen on dropping a large sum of money yet. I'm sure there are better and higher quality e-files out there (as I'm sure all you nail techs can attest to), but given the price this drill is AMAZING! I would definitely recommend purchasing some separate, higher quality drill bits if you really want to up the quality, but as a basic e-file this is great. I haven't had any issues with wobbling either. The e-file works wonderfully for what I want it for - shaping and removing acrylic nails.