Add to that list for consideration..
http://www.omniblendkitchenblenders.co.uk/shop/
I think it's better by far than the ones you have listed but the Vita-Mix for me anyway,is the best.They've been around for a long time and a 7 year warranty is good. This one has an 8 year warranty I think.You won't go wrong with any of them but for build quality I take the Vita Mix.
Had mine now for three years. used every day dont mater where you buy it from it does the job.