There seems to be a helluva lot of difference of opinion on these guys. Myself, I'm definitely negative on Adams. I also have never been very impressed with Montgomery, although maybe he has more ability than I've seen. Janis has always been the one I wanted to see play, and I think he proved his value when he finally got a chance. I rank them like this (Davis is pretty subjective since it's all measurables and hope with him):
1 Nelson
2 Cobb
3 Janis
4 Davis
5 Montgomery
6 Abbrederis
7 Adams