Another Magimix fan here. I am on my second (which is not bad in 40 years of marriage) and have a smaller one in my caravan. I did buy a cheaper one for over there, but it was false economy, and I ended up replacing it with a Magimix.
I would advise getting a large capacity one if space allows, as they come with smaller bowls if you only need to mix smaller amounts, and the extra power is useful. The small one does take up less bench space, however, and it is definitely a good idea to keep it out if possible, as you will probably use it less if you have to drag it out of a cupboard and set it up each time.