I got my two Bond pups because of th damline it would not have mattered who the sire was, so I have no favour towards him or not. However these two have wonderful temps, after one hydrobath they now stand there without even a collar, broke to lead in 5min, been in kennels (out of the runs) for a week and don't make a sound, don't mess in kennels or rip up beds!! Now this dosn't mean they will be able to run, but it will be easier to get the best out of them if they are not headcases! Bond also has a top s/rate so it might be a little early to compare him to previous "Ratty" sires.
Imo sires that have been a little disapointing have been Placard, Carlisle Jack,maybe expected a bit more out of Jack Jnr, and Lilly Pilly Lad. But its all about opportunties and throwing good race dogs early so the good breeders keep the bitches keep coming!
My knowledge dosn't go back a long way so some of these sires are stiil going,sorry!