Finding it really difficult to get data on the new Alta 8. I like many purchased the Alta only a few months ago so its a hard to get my head around having to purchase again. Where is the real world data on the difference between the Alta 8 vs 6. Flying 2 x 10mAh batteries with 15lbs payload I get around 8 minutes flying time. I would like to know what flight time I would get on the Alta 8 with the same 2 x 10mah with 15lbs payload.