Good article and I agree. I wouldn't use arimidex or letrozole unless it was for contest prep, otherwise, having a healthy level of estrogen is good in your body.
I have ran cycles exceeding 3 grams of AAS and never used more than Masteron or Proviron for anti-estrogen and they have both proven extremely effective (Masteron more so in my experience).
gh15 has discussed this before actually that Masteron is the preferred AE of pro bodybuilders. Some will disagree, but from my personal hands on experience, all the harsher AI's and AE's are only needed when it's close to contest time or if you are really prone to estrogenic sides.