ApostS, it all depends on the professor. I took honors calc 3, but he taught the same material for calc III regular but an hour a week a group of us would meet and discuss problems he wanted to discuss.
It was the easiest honors and the only honors I've taken. I took it because I thought it might look good but really, if you only take 1 honors course it doesn't matter.
But if your taking it for the material because you find calculus too easy, not because it might look good on a resume, then i suggest you do take it.
Also if you in honors already your required to take Honor classes.