Here are some more GPTs I've tried.

DealBarbiePays
http://dealbarbiepays.com/members/register.php?ref=eareeser

Pros: Many offers
Cashout: $20 by Paypal and check

Cons: None so far

Instant Profitz
http://www.instantprofitz.com/?ref=eareeser.

Pros: Many offers, signup bonus
Cashout: above $20
via Paypal, check, PNC Virtual Visa Gift Card,
SuperCertificate

Cons: None yet

Cash Crate
http://www.cashcrate.com/index.php?ref=58247

Pros: Many offers
Low Cashout: $10
Payment Methods: Company check, Amazon Gift Certificate, Visa Gift Card

Cons: Does not use Paypal