The lower line Campy cassettes (Centaur and Veloce) are a bit heavier than their upper crust brothers and have all steel cogs rather than the Ti cogs available on Record cassettes. Otherwise they shift every bit as well and are at least as durable. I've used Chorus and Veloce 10-speed cassettes and I defy you to tell the difference without weighing them (or seeing the invoice).

I have no experience with Miche cassettes but the reports I've read are mixed. Unless Campy doesn't make a cog range you need and Miche does, I see no reason not to use Campy.