Okay, time to wade back into this. First of all, I appreciate the responses. The Sturm and Drang of the Prisoner 6 and Fewtch exchanges is very informative. If I may say, as a casual and admittedly less informed observer, it seems like you guys were at times talking past one another.
As a newcomer to the site who has read a fair sampling of posts, I must say Prisoner 6's comments about "group think" have the feel of truth about them. I don't mean this as applied to the OBH-11 issue specifically, but to the site in general. There is just a suspicious amount of homogeneity of opinion, and in a few cases a hip smugness about it at that. On the other hand, Fewtch seemed first and foremost to be saying that he had arrived at an informed opinion about the OBH-11 independently and honestly, which, based on his posts, I would not doubt is true of all of his head-fi opinions.
Regarding homogeneity of thought on head-fi, it may actually be that headphone amps as a group are that clearly demarcated in their quality (and the OBH-11, which I have never heard, may certainly be). I am as yet unqualified to say. But even as a neophyte I am impressed that you really can't talk about amps in isolation from what headphones they are paired with. People do talk about this, but perhaps not as much as they should when making blanket assertions of an amplifier’s superiority. For instance, I find the Grado RA-1 distressingly warm and colored when heard through the Sennheiser HD-580s, but others have told me they really like it through their higher end Grado phones. I have heard the Pro-Ject Headbox, which is a much less refined but more forward amp than the Grado, and yet is to me much preferable to the RA-1 with Sennheisers. To my ear the Creek OBH-21SE is *much* better still than the Pro-Ject (again, with Sennheiser’s). I have never heard the OBH-11, so I cannot compare it to the OBH-21SE, though those to whom I have spoken who have (hello to Adam at Decibel Audio in Chicago) suggest there is no real comparison between the two units.
My comments about "group think" aside, I am delighted to have found this site. After all, some of us, when limited in relevant experience, are in essence asking people to think for us to some degree until we can get our feet on the ground in this wonderful branch of the sweet audiophile madness. (That was in no small measure what I was inviting in initiating this thread.) If, as we learned more, we still relied on the tastes and preference of others, well, that would be a sad thing. I have seen enough winters to presume that will not be my fate. But for where I am now, I do really appreciate what has been offered as advice and education.