Acrylic spraypaint mostly sucks, in my opinion. The stuff I've tried is thick and glops on.
Stick with enamel spraypaints.
I very much agree.
I work a lot with spray cans, and it is always enamel.
the trick with enamel spray is that the binder is mainly a carrier that evaporates, so the pigment has to be fine, whereas acrylic is meant to provide the coating, so carrier, acrylic binder and pigment are gloopy and build up a tension, that differs from subsequently brush applied acrylic coatings and cracks up their surface.
If You want to use this as an effect, it is just fine, but usually You don't
I tried acrylic spray, but the only actual gain is that You can cover styrofoam with it, and then You have to wait a lot until the coating is actually dry.
You can get a lot of enamel sprays very cheaply with sales, but You have to look out. And even normally priced they are always cheaper than acrylic sprays.