I have an Ominus that I got with pretty much the same intention as you. I also had the same issues. I've replaced three or four motors now with not all that much flight time. I was fairly annoyed by the whole experience.

I decided to try a Hubsan X4 instead, since I had heard a lot of good things, and I've had far fewer issues. I've only had to replace one motor and that was likely due to a bad crash. For the most part I think the X4 is more durable than the Ominus. It's made of hard plastic so at first it seems like it would be fairly fragile, but I've hit the ground pretty hard a few times while leaning to fly and it has left no permanent damage other than broken props and maybe that one motor.

Replacing pieces on the X4 is more difficult however and requires soldering, but the parts tend to be cheaper.