I've just read this thread with interest as I've have the Sapphire 875Q being delivered tomorrow. I have had to wait a couple of extra days for it as they ran out of stock and this one has been despatched from Germany, or so I've been informed. I have been a little rash and ordered it without test driving it, but my friends who have huskvarnas rate them very highly and one of them, who has half a dozen Janome machines, including the Horizon, has just taken delivery of the Diamond Deluxe.
I have a 20 year old Janome and a 10 year old Brother SuperAce II. I particularly wanted the larger throat facility, and the 875 was on offer for £899 (reduced from £1099) as opposed to the £1499 (reduced from £1799) for the Janome Horizon which would probably have been my first choice.
So I'll let you know how I get on with it