benartex flannels are also wonderful flannels.
one thing to look for would be if it is double sided flannel or just single sided...the double is 'soft' - napped on both sides. if it is just 'soft' on one side it is a much looser weave, and lighter weight flannel. single sided flannel can be as thin (or thinner) as regular cottons/shirtings. double sided flannel is nice and thick/weighty. no see through.