Best place to get Shared Proxies for Scrapebox?

I'm pretty much thinking if I should go with Squid Proxies or Packet Flip (both $100 for 100) but wanted to see if I could get a better price somewhere else...

Personally I would get private proxies for posting and then use public ones for your harvesting instead of getting the shared. You will only need 10-20 private unless you are working SB really crazy hard.

Oh and squid proxies work good I use them and yourprivate and have had good success with both.