I totally agree with dishall. I have and use many different annosets for site, floor plans, cross sections and CAD details etc.
When detailing the various plans It would be simplier to select the layerset and then select the annoset requied
This would eliminate the need to have; for example - site plan 1:100, drainage plan 1:100, floor plan set 1:100, roof plan set 1:100, steel plan set 1:100, electrical set 1:100 and so on.
In total I have 11 annosets for just the 1:100 scale not to mention the other scales