[Balloon-makers] Propane tanks and sewing machines

[Paul Vincent Craven]

Hi, a few questions:

Has anyone tried the composite tanks yet? I can only find them up to
33 lb / 8 gallon. I'm used to flying 10 gal tanks. I'm debating the
merits of smaller composite tanks vs larger steel ones.

Second question, seen any good sewing machines on the market lately?
I'd prefer a used one probably. Split-needle bar would be nice. Any
opinion on these brands? I've used Adler before, but they are out of
business.
Juki
Artisan
Highlead
Yamata

Are big hooks better?