We just switched to Plusnet yesterday and so far its been really good! Especially for the price compared to BT.
Today the Hub One rebooted but it was good because it updated its firmware to the latest 4.7.5.1.83.8.226
Before with BT with a BT "Smart" Hub I was getting 24ms ping, 60Mbs download and 15Mbs upload.
With Plusnet and the Hub One I am now getting 6ms ping, 65Mbs download and 19Mbs upload
My line was probably reset and I was took off any interleaving the Smart Hub caused but also now I have matching chipsets Hub One with ECI cabinet.
Also something I tested earlier on was Plusnets "Prioritisation". Normally with BT when I download a large file / game or uploaded something it would lag when I am in a Skype call, now with Plusnet it does not.