Please can you post the execution plans as .sqlplan files? http://www.sqlservercentral.com/articles/SQLServerCentral/66909/
There's a lot of important information which is not present in a copy-paste of part of the text plan.
Table and index defs would help a lot too.
Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability