I have done duplicolor and real automotive paint (using preval sprayers). both take the same prep and time.

Duplicolor is hands down not anywhere near as durable and it was more expensive that I expected

Real auto paint is way more durable, toxic and expensive. Part of the expense is that you can't buy it in the smaller amounts needed for a bike frame. I was in the 120-140 units for just materials. i have enough to do more frames, but who want to paint everything the same color?

My take would be to take it to have the guy do it (but double check what he does... should be strip bare metal, acid etch primer, sanding primer, multiple coats of color, and multiple coasts of celar)

I have promised my self the next time I would just powder coat.....but I just was given a torpado.....and the beige pearl is a nice color.....and maybe I will paint another frame.