So this is how I do BIAB and I've had excellent results with this process. Ive brewed everything from simple pale ales to big IPAs (Hopslam, Pliny the Elder) to English milds and Irish stouts using the BIAB technique described here.
I'm not saying BIAB is better or quicker or cheaper than traditional all-grain brewing techniques. I can say that Ive had success with this technique and I am very pleased with the overall process and the beers that are created using this method.
It takes me approximately 4 to 6 hours to complete a typical all-grain batch with this brewing method. BIAB is said to be less equipment intensive than traditional all-grain brewing but I can say from my experience that BIAB can still be fairly equipment intensive - depending on how you choose to do it. Since I havent brewed a traditional 3-vessel all-grain batch (yet) I cant compare and contrast the two methods or give any personal opinion on which is best. I suspect, as with anything else, there is no "best" brewing method and it really just boils down to finding what works best for YOU.
I'd love to hear any feedback you may have about the information provided here. I'm still learning and evolving and I know I've only barely scraped the surface of the mountain of brewing information out there.
Happy brewing! (A big thanks goes out to all of the BIAB brewers out there who took the time to document and share their ideas, experiences, and results. Credit to the Australians who pioneered this BIAB method of brewing. Forums like HomeBrewTalk and TheBrewingNetwork were instrumental in providing a resource where people like me could learn and share information. I couldnt have done any of this without you.)