I use 8.8.8.8 as primary, open dns as secondary and 8.8.4.4 as tertiary. Where are you trying to get to and why do you think there is a problem with 8.8.8.8? The degree of fault tolerance google have must be massive.
Edit: just did this at 17:50
C:\Users\General Maximus>nslookup
www.bbc.co.uk
Server: google-public-dns-a.google.com
Address: 8.8.8.8
Non-authoritative answer:
Name:
www.bbc.net.uk
Addresses: 212.58.244.68
212.58.244.69
Aliases:
www.bbc.co.uk