I think that the "better" items on a tier are the higher scores assigned to that specific tier. For example, I'd think a shardtail (tier 3, 7000-10000) would be in the 9500 range. I would like to know if this is true. I'd like to get 10 central members to try this. Report back what you have gotten. I will be doing this as well. It could be random, might not. I sent a friend 2 codes around the same score, and got the same thing.
1. Rockydodgers; Result: