When I first started I had a common, not knowing better.

Things were fine at first, but he kept growing and growing (huge!) and started going after everyone!
As much as I didn't want to get rid of him, I had to take him to a lfs that I deal with and also trust.
I did get two rubber-lipped pl*cos and have one in each tank. They stay small like the bristlenosed. I've had them about a year now and no trouble
BTW-pl*cos are really cool critters in the right environment;-)
Hope this helps.