Come on, guys, start thinking outside the box, here! 8 row heads were fine with 1680's, old 7700's, 760's and such, but the 2388 could easily handle 10 rows [a custom-made head] in 200+ bpa irrigated corn. I think the very least one coud do for an 8010 and like-sized combines, including conventionals like the 9600 and up, is a 12-row head!
12-16 rows is really just what the big 8010 needs.
If I had the money to spend on any of the larger Lexions, 8010, big rotary Masseys or other like-capacity machines, logic could only dictate an equally big-capacity header lest its real purpose be defeated. Beside that, combines really perfrm their best under a full load. Starving the separator of crop may result in increased grain loss.
If only 6-8 rows is all you want picked per pass, then I strongly recommend a smaller combine more suited for that sized head, which will also save in up-front cost of buying it. Just my 2 cents, guys.