Colton Willems or Chris Marrero would be my pick at present time in reference to first HS player to be taken in amateur 2006 baseball draft. Still early though. These two candidates I have seen "several" times and it will be interesting to see how it plays out.
I do like OP's and others' pick too, Jordan Walden.
Just my opinion though and haven't actually seen some of the other candidates mentioned,
so please no retaliations peace, Shep