Question about the MCP-655 / D5's vibrations?

In practice, how much vibration have people noticed from the MCP-655 / D5 pump?

In other words, for the sake of an example, say you put it on it's side (so not on the little metal stand) on a table with it running...would you really notice the vibrations noise wise?...any movement?...

I think I have an interesting idea for my pump placement, and I'm just trying to figure out how well I'm going to be able to secure it where it will lay...

Why would you have the pump resting on its side? What's your proposed layout?

I've been running a D5 and D4 side-by-side in my loop for about a month now, and can say with confidence that the D5 has fixed all of the vibrational and whining problems that plauged the D4. As for directly resting on it's side, I wouldn't recommend it. Why not use some foam or something to isolate it anyway?

argh...I said "for the sake of example"!...hehe...didn't mean I was going to do that, just that I am trying to get a a good feeling for how much the thing vibrates.

And yes, in practice, I would wedge some foam in there.

I'll write more later...sigh, I really wish I had a digital camera...

(P.S., there's no "orientation" that the pump must be in to work best, is there?...I'm sure it would work in any orientation, but I wonder just how much different orientations would change its effectiveness.)