Recommend a good electric toothbrush!

At 25, I have given up on brushing my teeth right. I either don’t brush thoroughly enough, or too hard, wearing down my gums. I want to get an electric toothbrush, but which? I’d like something cheap, but not something that will fall apart. I looked at the bad reviews of some models that got high average marks on Amazon, and there were complaints about metal threads coming out, gross ooze, broken parts after a few weeks… stuff that seemed pretty bad. I know there will always be bad reviews, but in these cases several people seemed to back up the stories, so they weren’t isolated occurrences. So please, when recommending a toothbrush, be sure to mention any problems you’ve experienced. Thanks!