Simpson SET-XP is approved for use in cracked concrete in accordance with the 2006 IBC. Hilti RE 500-SD is up to date with their approvals through the 2009 IBC.
SET-XP is approved for rod sizes 1/2"-1"
RE 500-SD is approved for rod sizes 3/8"- 1-1/4"
SET-XP is more difficult to dispense at...