Most will know my thoughts on the subject as its been discussed so many times and i still stick by my opinion in that mpv's make far better tow cars than most 4x4's.
I have owned and towed with many many different makes and types of car and hand on heart i have never had a better tow car than my current alhambra, its a 130 tdi sx and at two years old is the oldest car i have ever owned, i usually get bored with my cars and swap them every year but this car has so much ability i can find nothing to replace it.
A 4x4 can be very worthwile on some sites but in ten years i have only ever got stuck twice so its hardly worth the extra fuel and poor handling for this rare occurance, my last disco was a nightmare with poor handling when the van was on the back so much so that my wife refused to drive it whilst towing, the shogun was thirsty and rusted away underneath and the toyota was just awfull on fuel and image (too big and clumsy).
with a 2000 kg tow limit you will find the alhambra and the sedona will pull allmost all the vans you can buy in the uk but obviousley you will be over 100 % of the kerbweight with some allthough still legal, i towed my old coachman laser at 1730 kgs with no problems at all.
I am not anti 4x4 in any way but i do firmly believe from experiance that they no longer make the best towcar, mpv's have taken over.