We currently run SolidWorks 2010 SP 5.0 and EPDM 2010 SP 4.0 (Windows 7 x64).  Which upgrade do you recommend.

1. Upgrade EPDM only to 2010 SP 5.0
   
2. Upgrade SW and EPDM to 2011 SP 2.0
   

We have some crash issue on EPDM 2010 SP 4.0 that are allegedly cured in SP 5.0.