in my humble opinion....
we have just bought a H2L3 citroen although not new but we did look at the new ones.
if money was no object i would have bought a citroen 2,2hdi, h2l3 enterprise. the L3 is 6 metres and any longer will be much more expensive on the ferrys and parking in on road parking spaces would be prohibitive with the L4. the enterprise has the handsfree kit sat nav and aircon. our budget led us to a 2012 standard van , as for economy.... we are getting 40.8 miles per gallon which I'm happy with as its about the same as my car, so can't complain considering its size. ours had a limiter on. but that took 2 days to find its way to the bin, a motorway sneaky push on the accelerator saw the speedo well into the 90s, but the rev counter only close to 3000 so the performance is fairly good, after all its a van. one of the deciding factors for a citroen was the galvanised body so the paint chips don't rust, and as for longevity, my nephew was driving a citroen ambulance recently with over 300,00 on the clock. if i could change anything it would be automatic or 4 gears, 6 gears is too many.... but i think that about my car.