In reply to The Ice Doctor:
They are 'not bad' - depending on what model you get and whether you get a deal (usually on old stock, i.e. speedcross 3 are cheap now as there is a speedcross 4 out, but also silly stuff like last 'pair of size X in spring colours' when its moved on to the autumn range does also come up).
I've used Fellraisers which I did Lakeland 50 in. Really liked them but it appears I just do not get on with shoes with a low heel to toe drop as these gave me very very stiff calves despite lots of stretching and running more than enough in them to get me 'used to them'... (i.e. several hundred ks).
I've since been on Speedcross 3 which have a steeper heel to toe drop that suits me better but I do find them a bit more unstable (probably as a result). The first pair had a lace loop rip at 450km so I returned them and got another pair on warranty. The second pair has just done the same but as I've done a little over 1000km in them and they are more worn out generally I'll just replace those without making a fuss. So it does seem that the skinny laces present a bit of an issue in longevity. That said, I've also got a pair of Innov8 race Ultras (that don't seem to suit me) that have developed holes after about 400km, so ironically, for shoes designed for ultra distances, doing ultra miles does seem to indicate you might get through a lot of shoes.....
Oh, and the speedcross have done Yorkshire 3 peaks, Lakeland 100 (half of, I changed at 60 miles) and Glencoe skyline amongst others. They are not great on wet rock (are any?) but handle mud, grass, loose stuff and tracks well.
Post edited at 13:25