Just wanted to post a follow up. I got some of the Cisco 306 LRs. Very nice indeed. Great vapor production (even better than EM 510 LRs), good taste, and they're lasting longer than my EM LR 510s. I did remove the wicks and the bridges though.
I also removed wicks and bridges from my poor performing 510s and it brought them back to almost new performance without performing any other cleaning.
Word of warning though, removing the wicks and bridges from an atty means it can only be used for dripping. It will not work with carts any more.