The ability to have all of my contacts at one place with easy access for work purposes has been great! I can see what calls are coming into voicemail from different numbers as well which helps me keep organized when dealing w/ multiple clients or projects within earshot simultaneously (which happens often).
It's not perfect by any means - sometimes you get auto-attached messages instead if your contact info so be careful about how many people use this service vs traditional phone lines; however there isn't anything i really dislike right now except perhaps having an older version than others do since some features aren’t available yet like call screening options etc.. If someone wants their entire list together under 1 roof then yes definitely try out exchange communications!! You will love everything they offer especially being able connect seamlessly across platforms such emailing text messaging video conferencing web meetings calendaring ect...