look at GOBI from DBOR (
www.doubleblackoffroad.com). im a bit bias because the guy who i spoke to on the phone from uneek was a bit of a tool and didnt seem to want to answer any questions i had.
if you want to carry heavier loads, go for the exo-skeleton type rack(like the gobi and uneek), they are rated up to 130kg dynamic.
and welcome to your new addiction