Seeing as I have BT fibre @ 74.90mb and VM @ 105mb
3 weeks I've been using BT fibre it has been very stable and true to speeds(I ve humped the connection quite alot in testing :P)
As for my VM my samknows box reports looks like a rollercoaster for speed and latency
105mb 1 day 15.50mb next day ..then 30mb etc
Only 20 days left till its gone anyway