In reply to Siward:
The blender I'd reccommend is this one:
http://www.nisbets.co.uk/Dynamic-Dynamix-Pack/CF257/ProductDetail.raction
I use these at work, albeit the much, much bigger version and I can tell you that Dynamic make kit that will outlive everything on this planet. I could probably puree bone and metal with the "Master" model I have at work and then use it as an outboard motor for my RIB when the apocalypse happens. As an example, yesterday I used the master to puree 100kg of apples for cider pressing in about 15 minutes.
Bamix are probably the best you'll get outside of a commercial unit. Around £100 including the different blades and worth the money. One of the important distinguishing features is that the stem is solid stainless steel rather than plastic and if you're primarily blending hot food this is important. Cheaper plastic stemmed blenders can melt,warp and discolour. Plus, when the main blade on the Bamix dulls, hey presto, buy a new blade attachment rather than whole blender. I wouldn't hesitate buying it if you want something that looks pretty too but otherwise it's Dynamic all the way.
HTH.