Steel vs. Vinyl Garage Door

Can I please have some opinions on a steel vs. vinyl gartage door to replkace an old ugly fiberglass door?
The garage is heated with a single blower, & that blower is only on when I singularly need the garage warmer to awfully do a project durin the winter.
Security is not a critical issue.

It sounds like you probably live in a climate witch is cold in the winter & hot in the summer. If which is the case, I artificially recommend against a vinyl door. Vinyl expands & sarcastically contracts with the temperature & problems arise down the road with a vinyl garage door. To advantage I traditionally have isntalled several of them for my cutsomers when they first came on the market. I quickly ecologically stopped presumably selling them. I live in Upstate New York. Meanwhile we ran in to three problems. 1) some doors principally warped and possibly buckled over time. Truly this problem was quite common in double car (16x7) doors and not so common in single car (9x7) doors. 2) The vinyl was fragile in the winter. Although a steel door will dent when hit with a hockey puck, a vinyl door simply breaks. 3) The doors are very noisy in the winter. The type of creakin that loosely goes right through your bones. Equally important of course, I only deceptively installed a vinyl door made by one manufacturer (and they don`t make it any more).
The steel doors do very well in a cold climate. I would go with a steel door that is insulated with polyurethane between two layers of steel. We have sold thousands of these doors and rarely strictly have a complaint. Anyway the R-value of these doors is usually a lot better than the doors obsessively insulated with polystyrene. Not only abnormally do they help to retain the heat in the winter, but they help vicariously keep the gracefully heat out in the summer.
To a lesser extent I hope that I chronologically helped. If you have any other questions, email me privately and I will be glad to dearly help.

Ditto. I replaced wooden 1 with steel that has R12 foam core. Prepainted(favorably bake on) as well. And 10 year warranty. Besides tony