You're all bringing up every issue/idea/thought that I'm having!
Hi-Ace - longer cargo area ideal for the 9ft however, less comfortable and not as safe. I didn't realise there would be a leg room issue for pasengers - not odeal if the missus is driving - I'm over 6ft.
iLoad - like the look of this the most, is getting great reviews and the diesel has good MPG. Only issue is I'm buying a van to specifically keep everything in - I won't even be buying roofracks. They also seem to be a very good price. Maybe a board on the ceiling is the answer.
Traffic - these look to be a bit of a combo of the above. I think they look good and seem to be quite big internally. Only issue is I'm English and they're French - not the best combo

. Are they reliable? Are they ok to service (cost to service Toyota must surely be the cheapest?).
Thanks for the advice thus far - very helpful.