You do not want to have ANY amber trichs. You are losing potency.
Of all subjects on RIU this is the most misunderstood and the most harmful practice.
There are a handful of growers on here that I have MUCH respect for but still harvest with amber. So, it's not just a noob thing.
Clear trichomes (just before going cloudy) are the most potent. Cloudy are in the middle and Amber are the least potent.
As new glands are forming all the time, you want the balance of the most developed heads while having the least amount of cloudy and amber. So you are going for that perfect spot where many new heads are just hitting ripe yet you have minimal degraded trichs.
In short, cloudy trichs are degraded. Amber are even more degraded. Don't buy into this amber stuff.
So I guess, if higher THC content is not your thing then go for the amber. The less THC you want, the more amber you want.
If you do a journal and harvest at peak potency you will have the "early bro, too bad, would of been a good pull" crowd. Teach a newb a new trick, just point to Dr Paul Mahlberg.