I really like the OC "microsofter" shirt as well. I have yet to find any shirts comparable, however, while inquiring with Honig's Bill Hoseney (GM), he indicated they were putting out a "new" shirt that is similar to the OC "microsofter" and would be listed in it's next catalog.
There is a "ProSofter" model that is listed on the Honig website which I believe is the counterpart to the OC model. I have not ordered one of these to compare....but will tell you that about two years ago, Paul Anderson sent me a FREE "sample" of his Grey Shirt for me to show members of our regional association. At that time he said he had the traditional B&W ones in the same material. I ordered three of them and many others did too when they saw the shirt. I continue to get positive comments about the shirt. I certainly would want to hear reports from those who are wearing the Honig ProSoft shirt.
http://www.honigs.com/detail.asp?Cat=2&Sub=22&Item=1044
I might just have to order one and compare the differences, if any.