I been thinking about joining them for a while but can't yet as my contract with TalkTalk doesn't end until October. But after hearing about bad support for the past month or so I'm feeling reluctant to join them unless there support gets better, you see Plusnet you are/could be loosing future customers like me if people hear about the bad support.
I'm in much the same position. I'm now on rolling contract with BT Infinity and BT line rental saver getting close to expiring. I'm thinking of moving to PlusNet but quite concerned about the lowering support standards. I was with Nildram and saw the signs and managed to leave before it got so bad. Then with BE, who I left as they could not provide FTTC. However, keeping up with the BE forum the signs of deterioration were already there even before Sky, so I think I would have left anyway. I moved to BT FTTC rather than PlusNet as PlusNet couldn't provide 20Mbps upload at the time.
18 months is a long contract if PlusNet really is getting worse. In addition, quite a few people seem to have issues with PlusNet getting the transfer wrong in some way or another ~ not sure if that is mainly on new FTTC installs or on broadand/telephone transfers. I'm monitoring this forum for a bit before deciding to jump; I'll probably let my line rental saver die and be replaced by a normal monthly contract too.
BT Infinity 2, thinking of moving to PlusNet