Research methodology

1. Topic selection. Named product pairs with real buying tension (utilities vs throughput vs lock-in). No generic best-of lists.
2. Source collection. Tier 1: manufacturer spec sheets, NFPA/IFGC, SCA production guidelines. Tier 2: dealer quotes dated within 90 days.
3. First draft. Kai Nakamura writes each comparison as a decision tool — picker, spec table, one honest limitation. AI assists research; humans verify every number.
4. Fact check. Uncertain specs are flagged “verify with dealer” — never invented precision.
5. Update cadence. Re-reviewed every 6 months or on OEM spec change.

human-curated, AI-assisted research. See editorial policy.