About to start $5000 campaign with Casale - advice plz!

[oasisx]

I've been running a successful Adbrite campaign for several years but have been wanting to try new PPC services.

The thing is, with adbrite I'm currently getting an excellent 5cents per text ad click on run of the network, but the lowest Casale have offered me is 70 cents! Now it's clear that the quality would be better but I don't think it will be this much better, only one way to find out I guess.

With Casale there will be a mixture of different ads - banners, pop-unders etc and the creatives will be mixed around to find the best converting one.

Any advice before I take this big step would be appreciated. - Is it a rip-off? - Will the quality be that much better? - Will the click fraud level be lower? - Why the huge discrepancy in price?