Moss, Harrison, and T.O. are the studs at WR every single year. All 3 are just freaks of nature.
Any of the 3 could finish as the #1 WR this year. The preseason #1 guy out of those 3 never finishes as the #1 WR at the end of the year anyway. So get any of the 3 and be happy.
Holt had a career year last year, I don't think he is even in there tier this year.
Any time TO gets the ball he is a threat to score, thats the kind of freak I want on my team.