The ease of use is great! I like how easy it was to get started with this software; there are no complicated features necessary for me as my business doesn't require them yet (but they're in development). There's nothing really bad about phone call manager so far - but if anything comes up please let us know here at Contactually because we'd love any feedback from people who have used similar products before!! We've been able solve some issues where customers were calling out-of state numbers which took longer than expected due to time differences between states/countries etc., otherwise everything has worked well since implementation last week :).