Chris, I've been in welding game around 40 yrs. I got a new Lincoln last year as replacement for old one. BTW most places will sell the small & mid-size tanks, not cheap. Nor is getting them refilled.
I bought this
ONE for $150. This
ONE might meet your needs?
I really want one with ac/dc output, around $500, but my TIG regulator, other shit needed repair, so I got the cheaper one.