I've used both BidRank and GoToast to manage Overture accounts. They were about the same. I prefered BidRank because they usually release their updates sooner than GT.
Heya! My impression of the Permutator is that it's more for setting up campaigns as opposed to ongoing management. It does list a tracking feature, but I don't know how extensive it is. Some others that were recommended on Cre8asiteForums.com... www.ppcmanagement.com www.wsps.co.uk