Large car rental advice? (more than 5 people)

Hello. Myself and a group of friends are visiting soon and were thinking of renting a car for a couple of days exploration. Most of the vehicles we have found on internet rental sites (mostly the big multinational corps) have space for 5 people. There are 6 of us. We've found some with 7 people vehicles, but they have been on the luxury side of things (Land Rovers and such). Does anyone have suggestions for more reasonably priced large vehicle rental? Thanks!

Edited to add: We don't expect any off road travel.