Harvesting: best time

I have two strains pretty much done flowering. Mango Kush and WW. I am waiting for some amber then want to harvest but what I have noticed with the WW is that its taking a long time to turn amber, its been 8 weeks already and no amber. Its physically looking very done. Most of the hairs are orange, have noticed some turning brown and thinning up. Is this a sure sign to harvest!?
The trichromes are pretty distinctively mushroom shaped as well. JUST NO AMBER!! >

250 W HPS
190 CFM exhaust w/ Carbon filter
Soil Organic, coffee grinds, sea weed from beach, slight tea feedings.

White Widow

http://desmond.imageshack.us/Himg24/scaled.php?server=24&filename=img1125kx.jpg&res=landing

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WW
http://desmond.imageshack.us/Himg713/scaled.php?server=713&filename=img1116io.jpg&res=landing

the mango is still also very milky not amber too>!>

Mango Kush

http://desmond.imageshack.us/Himg42/scaled.php?server=42&filename=img1108an.jpg&res=landing

Most of my strains take 60 days to start going amber. But each plant is different. I would just be patient if that is the stage you are looking for.

I don't really prefer any kind. I just read amber trichs were the number 1 sign of ripeness. If they are ripe right now, I will harvest now!

You want cloudy, as much as possible, but the amber is a sign of over ripeness, or degradation of the trichs for the 'couchlock high'.

Yes, ok I got that now. Think its time!

dayumm! Look at my White Widow shes truly GLOWING with crystals!!

http://desmond.imageshack.us/Himg825/scaled.php?server=825&filename=img1132qe.jpg&res=landing

Real nice mushroom shape to the crystals, will harvest this within next week.