There seems to be a lot of new thinking on this issue, and I have to agree with it. I too was an amber type of guy. I was just always taught to look for about 20% amber. It turns out that amber resin is degraded THC. The more amber resin you see, the more potency that has been lost. However, the amber resin does effect the type of buzz, and if you love that burnt out couch lock type feeling, go for more amber resin. If you are looking for peak potency, it is a trick between getting the bud before trichs go all cloudy, but after the pistils start to dry and retract and the calyxes have swollen.