Wouldn't touch them with a barge pole. I haven't personally dealt with them, but I've come across them in business and they have a reputation of being very slow when it comes to claim handling.
I generally switch every year when my renewal is up, but I've stuck with Tesco home insurance for the past couple of years now.
I had a claim a year ago, when my shed got broken into, and they were absolutely brilliant.
I've recommended them to loads of people, and would have no hesitation in doing so again now :-)