Probably not adding much at this point but since the post was resurrected....
After going through a few of the starter kits from Tandy, I purchased a several of their craftsman shoulders and even a side as I've been afraid of buying leather unseen. Fortunately, I live in Houston with three Tandy stores, two about equal distance for me to drive. Not an inconvenient drive time (about 35 min one way) but an annoyance to pick up just one thing. I then bit the bullet and bought an HO side from Springfield and was very pleased. It did tool better and seemed...well.... worth it. I am only a hobbyist, only built a few things for myself and use it for mostly 'art work -- and you should be laughing at that "art" statement! I'll probably order more again from them, shortly but I am a hobbyist and like what @BDAZ said most people probably can't tell what was used after the end product has been tooled up, dyed and stitched up.