CCIP Books

Hi,

I am planning to purchase the following books from ciscopress.com for my CCIP studies but want an opinion on them before I commit to a purchase.

642-901 BSCI Building Scalable Cisco Internetworks (BSCI) (Authorized Self-Study Guide), Third Ed. CCNP BSCI Quick Reference Sheets CCNP BSCI Portable Command Guide

642-642 QOS Cisco QOS Exam Certification Guide, Second Ed. Cisco IP Telephony Flash Cards and Exam Practice Pack

642-661 BGP Internet Routing Architectures, Second Ed.

642-611 MPLS MPLS and VPN Architectures MPLS and VPN Architectures, Vol. II

Are the books listed above ok or is there better material out there specifically for the CCIP exams?

Thanks

Peter