If exhibiting and winning is your main goal then blacks are the way to go. With LF they also have nice blue colored eggs (a little too dark/turquoise), but remember not all stains/lines of any variety are the same. I suggest going with the color/pattern (variety) that appeals most to your eye. Try a few different varieties to find out what you like best.
Even though my LF silvers are/were flightier than other LF varieties, mine are probably the calmest strain of LF silver Ameraucanas. It is all relative and there are exceptions to every rule.
When I created many of these varieties decades ago they weren't developed to where they are now, so characteristics change and charts rating those characteristics have to be updated. Several years ago my LF blacks laid more greenish eggs and my LF silvers were too small, but I don't know of anyone that had better. Continuous improvement is my goal.
I don't exhibite. I just have a love of the breed! I like the Wheaten/Blue Wheaten! Any insight on them?