FTTH and DSLAM Access Vendors

I am looking for comparisons between the following FTTH GPON and VDSL2 access platforms. Has anyone recently compared the capabilities of each of these platforms? Alcatel-Lucent 7360 ISAM Adtran Total Access 5000 Calix E7 Cisco ME4600 Huawei MA5600T Zhone MXK They all look great on paper, but there has to be some key differences other than price. Besides the vendors listed above, is there anyone else in this market?