RE: 2007 or 2008 Bowtech Guardian?
I had someone come to me from my church with the same question... I advised him to go with the '08 because of the black cams (won't catch the sun's reflection) and the Invelvet... for the price difference of the two at the time he was looking (I think $50 or so...) I told him to go with the '08. Even if the cams never reflected light (though I've seen it hunting with a buddy and hence one of the changes I requested in late '07), I prefer the black cams anyway.