So I really really want a 300mm 2.8. But I just cant drop $4500 bucks for the VR. So I have been leaning towards the sigma 300mm. But, there is always a but. A friend also recommended the 120-300 2.8..... . I know there is a thread about this lens but with a choice between the two... any recommendations? Mostly for sports and birds, and some use with a TC. To make matters worse that 85. 1.4 looks better every day, I guess i could just back to my original lust of the 300mm F4 afs and get the 85.... I really need to be more wealthy!