BGP Study advice

Dear Friends,

A bit confused before beggining BGP hardcore technology studying
before starting the lab part, ive got two options to choose from:

1) Jeff Doyle
2) Sam Halabi

Which one shud i choose to comliment with Cisco Docs? Sam Halabi is
very detailed while Jeff Doyle is a must study, so what shud i use?
What have u guys used to master bgp ins n outs?

Thanks in advance!

-- 
Regards,
Asif Khan
Blogs and organic groups at http://www.ccie.net