I'd recommend nolv over clomid any day. I've never suffered from the clomid sides, but why take the chance when there is something else that will do the job.
Which is more effective, I don't see a difference. There are two sides to this argument. The pro clomid side and the pro nolv side. I've had studies for both arguements emailed to me and I honestly don't know which is right. But like I said, they both work, so why risk a mental brake down with clomid.