Bill,
I haven’t seen those particular profiles (although David Campion was here just a few days ago), but I am a big fan of Don Mar.
Just after Christmas, (in an effort to bolster a rant aimed at Brian), I did a financial/statistical comparison between Don Mar and Larson-Juhl. Of the mouldings I have on display, the median wholesale chop price for Don Mar was almost $1.60 less than L-J.
Don Mar is not one of the “high end” distributors, though. In my opinion, their mouldings are good but not great. Their prices tend to be much lower across the board than most.
But, I’ll bet that if you are impressed with the corners you described, the actual moulding will be just as good as the samples.