Arline, I order all my wood from either fruitawood.com, or mainegrillingwood.com - never a complaint from either! Good, quality, properly-seasoned smoking wood. Many of the brands you mentioned are also sold in the "Big Box" stores (WalMart, Lowe's, Home Depot, etc.). They tend to be older, drier wood. Fine, if you're throwing them in a stick or charcoal burner, but not so good in the SI smokers.
Bark is not an issue, as long as it's from a reputable supplier that washes it good. Bark from wood that has been aged outside, with no cleaning? ...not so good! The main problem with that bark is it has mold, fungus, dust, critters, etc... in it. The sources I mentioned thoroughly wash their wood.