Before you start emptying your wallets, you should try getting the CAs to validate the debts. Depending on how long ago your investigations were with the CRAs you could do the 1-2 punch that goes like this:

1.) Send Debt Validation letters to CA (very important to send the CMRRR so you know they got them)
2.) Once you receive the receipt cards back ("green cards"), send off a round of disputes with the CRAs