Funny seeing this thread pop back up today. It was this thread that got me to switch to BIAB. I was disliking the beer I was making from extract and did my research. Finally after reading this thread, on my last brew of extract I stuck my finger in the LME bottle after pouring it in and tasted the LME, yep, that was the flavor I was tasting in the finish of my beer. I've just kegged my first two batches of BIAB this week and although both were flat and warm when I tasted them, neither had that extract tang to them. I am so excited for them to get carbed up.
BIAB only adds about 1 hour of extra time to your brew session. You can also do it with all the equipment you already have (for the most part)