Spray ceramic vs. glass-bottle ceramic — which should a beginner buy?

Specialist communities are pretty consistent: if you're new, a spray-on SiO2 or graphene product (Adam's Advanced Graphene Spray, Meguiar's Ultimate Ceramic, Cerakote Platinum) is far harder to mess up — no flash times, no high spots that require polishing out. Glass-bottle coatings reward experience and patience and punish mistakes.