05-18-09: DavidandrewwayYou mean the OMD-5, right? (The OMD-15 is a floorstander.)
The Omd-15 looks like a killer little speaker. A bit too much $$ though. Would the OS-3 be that much of a step down?
Would you give up a whole lot with the OS3-Sat? Probably not. The OMD-5 has just a little more bass extension owing to a slightly bigger driver and cabinet. Their sensitivities are nearly the same and amp range is 10-175 for the OMD-5 and 10-150 for the OS3-Sat. Can't get much closer than that.
Both speakers use the same tweeter and the mid/woofer is identical in construction and materials except for the diameter. At your very short listening distance the OS3-Sat should be just fine. Both can fill a room surprisingly well, especially with a sub.