for commercial there are 2 types of automtive paint right now the 1k (acrylic) and the 2k (urethane) right now top brands for 2k are polygloss, dupont, anzahl and for 1k glasurit, dupont, paralux,
Polygloss ang pinakamaganda among the 2k type paints mentioned above. Para naman sa 1k you can't go wrong with Paralux or Glasurit.
It's about 1 cm longer than the 3SM and about 4 cm longer than the DIN74. And it's also in the 10k...
Cheaper brands than Motolite but reliable as well