There really are so many choices. Perhaps some of the advice in this article, not to mention the conferences they talk about, will help you.
As for me, I’m currently planning on being back at ILTACON in August. Haven’t been there in a couple of years, so I’m looking forward to it. But I know some of the other ones are pretty good too. Just depends on what you’re looking for. Especially if you’re looking for a specific field. I know there are plenty of conferences that focus on eDiscovery, for example, or corporate legal departments, etc. If you want to spend a few days immersed in those subject areas maybe the larger conferences won’t do it for you. There are certainly a lot of options for us all out there!