I've had my VPS going for a couple of weeks so I thought I'd give an update as to how things are going.
I had pingdom set up to keep an eye on my server before I switched to loveVPS, attached is the graph for the last couple of weeks.
Pingdom opens a connection to my server every 15 minutes. You can see in the middle that there was a large spike for one of these checks - the response was around about 1.3 seconds - I *think* I had been updating something on the server at the time, but even so, it's one single datapoint out of a whole bunch so really quite impressive. Before the move my average ping was about 120ms, since the move it's been ~100.
I've been able to do everything I've needed and I'm still really pleased, there's been no down-time at all (my old server, which lived in a cupboard under my stairs had a surprising amount of down-time, which I only actually became aware of once I started monitoring it with pingdom, I'm not running Facebook or anything!).