VM used (note "used") to be good and reliable, now I am sorry to say that in the last 4 months it has become soooo UNreliable that I am considering leaving for better ISP.
Correction: YOUR connection has become totally unreliable, not the whole of VM's network. Many others have good stable connections and hence don't complain on forums like this. Forums like this are actually a very poor place to assess how good an ISP is since the majority of posters are people who are experiencing issues. They are however an excellent place to see the sort of problems that some do get and find out how to resolve them.
I have an excellent VM connection, very fast, low latency, low jitter, very reliable. The provided SuperHub was rubbish though so I shoved it into Modem mode and now use an Asus RT-AC66U instead for routing and wi-fi.