snap are very quick to catch onto issues in their network and resolve them, Their communication is normally excellent, and when NOC gets involved they go out of their way for their customers.
Since 2d have taken them over I have noticed a significant drop is responsiveness. Used to get a follow-up within 45-50 minutes from Snap even on long weekends. Now you are lucky if anyone gets back to you at all because it goes via the 2d team.
That said, things have improved markedly; sitting consistently at 7Mbps, which although lower than the usual 10-11 is still "usable". Latency has also dropped right off with no unusual peaks.
And no, I don't have proper software, just the speed tests site to go off plus trace routes, which has always been enough to get a good feel for where the problem is most likely at.
Anyway, seems stable now, although a little slower than usual.