Don't think any offence was meant by that comment, I quite agree we're not the most reliable source as SB's etc.. take a while to filter down to the mechanics/engineers that embody them.
Only place I know you can get them is through the manufacturers subscription based tech services websites. Boeing and Airbus have very well appointed ones but I don't know about smaller firms.
If in doubt, your maintenance firms tech services department should be able to tell you whether an SB etc.. is current or not.