Thanks for the feedback all very useful, luckily my towing is only a few times a year as the boat is kept in Brixham marina during the season, got to balance my work car 35k miles a year with something that can tow albeit not very often. The ex wife currently has the navara which I borrow when I need it (seen as I still pay for it!) but it comes off rental in July so I have a while to find the right vehicle for work and towing.
Cheers all.
Greg