Sorry, my bad, just meant "the right spell". Level just slipped in because of the improved counterspelling.
Well, that is exactly one prestige class with one from many class features that makes counterspelling worthwile.
Yes, but with disspelling you better hope you have the right spell...
Ok
Since mostly all say that b) is the correct answer i take that, while i still can´t see a reasonable difference between readying a spell and then cast dispel magic and readying a counterspell and then cast dispel magic ;)
But since this seems to be the ruling i think next to nobody uses...
To counterspell you generally have to ready an action. What exact action do you need to ready?
a) "I ready to cast a spell as soon as evil-wizard(tm) casts a spell."
b) "I ready to counterspell as soon as evil-wizard(tm) casts a spell."
c) "I ready to counterspell using (Dispel Magic OR...