Who's selling prefinished wood siding that actually shows up ready to nail? Every 'factory finish' I've gotten has been garbage.

I've ordered "factory prefinished" siding from 3 different suppliers in the last 2 years and every time it's been a nightmare: - First batch: finish was UV cured but only 1 coat on face. Looked great out of the box, failed within 8 months. - Second batch: back-prime only, they called it "prefinished." Had to field-finish the face and edges anyway. - Third batch: actual 3-coat system but applied before profiling, so the tongue and groove edges were raw wood. I need 4,000 sf of prefinished hardwood siding (sapele or similar Class 1 species) for a project starting in September. 6-sided finish, minimum 2-coat system, applied AFTER milling. UV stable for south-facing exposure. Who actually does this right? I'll pay the premium, the field finishing is costing me more in labor and delays.