Quest turn-in automatically selects most valuable item.
Thanks, I've fixed this and another WoD bug
For those still using this addon, you can fix it up for 6.0.2 (WoD) by doing the following:
(1) Open the file VendorReward.lua
(2) On line 10 you see "QuestInfoItem"
(3) Change that to: "QuestInfoRewardsFrameQuestInfoItem"
(4) Save the file, and you're rolling again
Remember to make a backup of the file, and use notepad and not a full-fledged word processor.