yea monybookers.com is really cool too, i was just checking and article of Paypal/Ebay sucks conducted by Money(BBC) and from there i found an alternative suggested by them = http://xcoin.com/
I have checked few and here are My views
Paypal = Very good for Buyers only (for Seller it just Sucks)
2Checkout = Very Good Specially for pakistani who want to sell goods to world(But be sure to have good return Policy to secure yourself)
Google Checkout = Really Awsome if you live in U.k or USA leave everything just go with google checkout it is really cool with protection to seller , low fee i am using it in 90% of my transaction and that is damn cool.
moneybooker.com = very good specially there no chargeback policy. but the limits are the problem (you can remove them by providing proofs) not very good because the market is very limited.