Best tool to automate social bookmarking?

I'm out to buy some software to automate my socialbookmarking processes. What tool is the best with the best success rate for bookmarking that isn't a montly subscription?
Thanks

I have both BMwiz and BM demon, the only thing that separates them is the price. wiz is 50 bucks cheaper.

Note: Neither will give you 100% success - no auto posting tool does.

To work either properly you need decent fast private proxies. Scraped ones will will give you a massive failure rate due to either proxy bans or time outs.

Not using proxies will get the majority of your accounts closed before you know it.

Scritty

10/4 thanks Scritty...I will be sure to purchase private proxies as well.....do you have a good service you coudl direct me to?

I might check out one of thoes tools skritty mentioend. for proxy someone that seemed knowledgeable mentioned on another post here :Cloakfish, Proxy Bonanza, ProxyGo's Service, Your Private Proxy,