Template / builder
Good to validate an offer, ship a single page, move fast on a tight budget. Limits: performance, fine SEO, integrations, and looking like everyone else.
Custom
When you have unique flows (quotes, catalog, logged area, automation), need mobile speed, or the site is the door to a larger product.
Smart middle ground
A custom landing + lean content, or a well-configured template with a clear CTA, often covers cycle one. Evolve when pain shows up with numbers.