I can only comment on chilled but my maiden 19 year old got in foal with it and I have an ET due this Sunday. The courier also lost some semen which turned up 3 days later the vets commented it was more viable than most sement which is less than 24 hours old.
I like San Amour but he is no longer the new thing there where several foals in 2008 and few in 2009 and I am on the end of the wave using him for my 2010 foal.
My San Amour filly arrived 4 days ago. A black filly with a star just like I ordered. I found the frozen semen to be quite good. I used one dose three years ago with a competition mare who hadn't been bred in 7 years and never with frozen for a successful embryo transfer. Sadly, that colt died at birth. I used the other dose last year on my Rohdiamant mare who is 12 and had been successfully bred a number of times with frozen, so perhaps her pregnancy was less impressive. But still no complaints about two pregnancies with two doses of frozen.
Personally, I like this foal VERY much. She is quite pretty, leggy (but not too light of bone) looks to have very round, uphill gaits. Overall, IMO, a big improvement on an already nice mare. I would definitely consider breeding back, but of course will continue to assess as she matures.