Or any other relatively inexpensive ad server for people who have never used them before?
I wouldn't recommend it if you have more than one buy going though. The platform isn't very robust for that.
With all the major ones, you won't have any issues with speed etc - atleast on the serving side.Maybe this deserves its own thread, but I'll post it here.
Do you guys have any data / comparison on reliability of different ad servers?
I just tried to set up another campaign in OpenX and found out that the banner does not load on every third refresh (no I do not have any caps set).
Just curious how much impression fail are you seeing with different ad servers.