Just to weigh in on the show line/working line topic as the owner of two German show lines....
I'm focusing mainly on the last two posts from Kevin and Angelique. In my limited experience (3 short years ago I didn't know a Schutzhund from a Dachshund LOL - but I try to be a smart student), there are a whole lot of factors at play.
At the end of the day, I hope that more USA based people (breeders, handlers, enthusiasts, etc.) continue to work to bring this sport "home" for us. At least in the German show line world, IMO we are too dependent on the German SV system, and subsequently the people involved from judges to breeders to handlers, etc. Some are honest and good people, and some are not. That's one of the first reasons why I personally don't give a whole lot of credit to titles - especially those earned abroad, with no dog owners / American officials / American spectators, etc. watching. I'm not talking about the World Championships - I'm talking more about club level trials.
See the dogs work. Look at the score books. When I see SchH3 titles earned in Germany, where the score book shows that every title was earned on a home field - that's a red flag. Not that home field trial titles are bad. It's just a flag when 1) the dogs are typically being titled by people paid to do it and 2) there is no American audience to see it and 3) in the common case of show lines, the SchH3's are happening at a rapid pace, and at typically very young ages.
With our show line female, the pressure was on to send her to Germany for titling. I'm relatively certain she would be a SchH8 (yes 8) by now had we done that. We didn't trust the particular "program" we were presented with, so while we did use a professional trainer (remote) to help us with the SchH1, that was done in the bright light of day in the US. She earned her points, and we like knowing that.
To one of Angelique's points, we floundered trying to find training options until this bitch was 18 months old. That is unfair to any dog in terms of getting the best possible SchH start, at a young age, with the right foundation. In spite of all that, she did honestly earn a SchH1, so she's got something decent going on there.
Mean time, we found Dave Blank and our second showline (and his newbie handler - my husband) around the same time. EVERY dog is different. No question about that. Different drive levels, nerve levels, etc. Our second one just happened to be born with a bit lower genetic drive levels (compared to the average working line shepherd) but VERY high nerve levels by comparison. AND he's getting the benefit of working with an experienced trainer (Dave Blank) who can read dogs, and understand how to bring out the best in them. Once this dog understands that a new aspect of the SchH game is fun, he is unflappable. AND he's very easy to live with - for the most part is is loose in the house in the midst of a 4 dog pack, and is calm, calm, calm.
In summary, I think the whole "show line/working line" debate is far more sophisticated than a simple discussion about which has better drives/nerves on average. Early foundation work makes a huge difference, and many dogs don't get that. Good training makes a difference.
As far as the titles go, I want to see the dogs work. I would never totally rely on what shows up in a score book.
Thanks for listening..
Beth