The speed of light through our leased line was incredible! It allowed us so much more bandwidth than we were previously using which meant better productivity across all departments within my organisation - not only did it allow me to work from home without feeling disconnected but also gave other team members greater confidence when working remotely too (which they have been).
Nothing really at this time as I haven't experienced any major issues with their support staff however some minor problems do occur now & then such as slow speeds etc., there are no real cons though apart from those small things mentioned above unfortunately.