The Sierra SBT's are ok but don't use the HP's on elk. They're made for deer.
AB's are the most accurate bullet I've ever shot but they ruin too much meat for my taste.
I've had GREAT luck with Speer Hotcores but I can't get them locally any more. I hate to have to order my bullets. I've shot a lot of elk with Hotcores and find them to work as well as Partitions.