$6 a yard for flannel is quite a deal! in the lqs it is $11.50 a yard!
i've bought lots of flannels from fabric.com- some were thin- some were better- you can find them by manufacturer- (like moda, benartex, michael miller)
the ones that are just under flannels- without a manufacturer listed are the (thinner) ones- not to say they are not good flannels- they are just a lighter weight flannel.
i'm not sure if benartex put out Apple butter flannels- i do know they are nice flannels....i don't pay alot of attention to the names of different collections- i buy when i see it-feel it-want it---but tend to check certain manufacturers, designers for what i am looking for- what the name of the collection itself is---i seldom even notice.