Tank info....How to Select a SCUBA Tank - Dive Gear Express
Be careful about free advice. Unfortunately, some advice you pay for isn't worth much either.
Keep up your research.
Thank you for the link, they are in my bookmarks. I have been though all of that and per my OP we have purchased HP-100's. My point is that I check different sources because with the information I gained here an another local board I know better then what I was told by the local.