I lost the blade to my old Braun food processor, made in the mid 80s, and could not get a replacement, so I needed a new machine. I chose the Magimix as it was one of the few processors on the market that is still made in the developed world and a lot of the leading brands seemed a bit flimsy when I looked at them in shops, although I was not entirely certain whether the extra cost of a higher-end machine would be justified.
On arrival the first thing I noticed was the weight of the thing and it's reassuring solidity. There is a fairly comprehensive set of blades and three mixing vessels which helpfully nest to save space.
Since owning it I have given it a fairly thorough test. For fine chopping, the small blade in the smallest vessel works very well. This is best done on pulse to avoid whatever you are chopping getting pulpy. The grating and slicing blades also work extremely efficiently, reducing carrots and courgettes in seconds. There is always a few small pieces left between the top of the jug and the blade, but it is not a major problem to fish these out. The fine grater is excellent for parmisan cheese.
Also the egg whisker, (which I've not used on eggs yet) made quite a good blender for things that need folding together like a spinach and ricotta sauce.
I've also used the basic chopping blade to make crumble toppings which it does quickly and easily.
The dough hook was the one part of the equipment that looked to be a bit puny and possibly not up to its task, as it's not actually a dough hook (like those huge metal things you used to get on Kenwood Chefs) just a small plastic blade. I tested it on the ingredients for a medium sized loaf of bread, not really expecting great results compared to a hand kneaded loaf, but was just interested to see what happened. Even with the weight of the machine, I did need to hold it down to prevent it bucking around the work surface and initially it looked like the task had defeated it, but gradually all of the ingredients mixed and I got a large evenly mixed ball of dough, which baked into a surprisingly satisfactory loaf.
The machine really comes into its own with soups and sauces which it blends to a very fine consistency. The downside here is that the machine will leak a little if you fill it much more than about half way, if the contents are quite liquid. You can push this to about two thirds with mixtures with a thicker consistency. If you are going to be making quantities anywhere near the capacity of the largest vessel, then the bigger model is probably going to be more suitable for your needs. Personally, I chose this sized model as I have limited counter space in my kitchen and felt I could not justify the space for the larger one. I have only really found this to be a problem when I make large amounts of soups for freezing. For the kind of quantities for making meals for 2-4 people it seems to be fine.
The blades are extremely sharp which is a good thing, but wash them straight away. If you leave them lurking under the dish water and forget they are there, you may regret it when you put your hands in later - I speak from experience here!
All in all this is a capable and well made piece of equipment which I enjoy using. I think the build quality and performance do justify its price. I think the leakage with larger quantities is a design drawback, but if you are not processing large amounts of food, it is not a serious problem.