The Eloqua user community is strong and supportive. For me this is just as important as the features and functionality. Each of our roles and businesses face unique challenges; learning best practices, connecting with users and Eloqua support and staff makes doing my job significantly easier and my campaigns more successful.
I also love how Eloqua works "out of the box", like any large company we have a few of our own work arounds and integrations but generally speaking Eloqua offers the functionality we need (and then some). I also love how user friendly the new E10 version is. We launched on E9 and when I first received a deo of E10 I squealed (yes out loud). To be able to create emails and landing pages without digging into the HTML is an incredible time saver.
Finally, the partner community is awesome. I have leveraged several of the cloud connectors and have a list of others that I want to try. Working with these 3rd party developers has been a breeze. Their connectors work, their support staff knows how to implement quickly, and most are priced rather competitively.
Give me more filters. The filter capabilities are on par with other solutions so it's not like Eloqua is lacking. But at the top of my wish list is I'd love to have more filter criteria to work with.
Think big! Plan early! Planning is essential, when getting started there are lots of things that need to be thought through. Take the time to develop your processes and bet practices. That part is never fun but it is worth it. Also, think BIG, like REALLY BIG! What would be the most amazing campaign you could run? Then back into how you could do that through Eloqua and Eloqua products. Also, don't be afraid to hire a certified partner. When you are just starting out, if you take my advice and think big your teams won't be ready to implement complex campaigns. But there are partners who can execute for you. In this instance not only do you get a really snazzy campaign but you learn along the way how to replicate the approach for future campaigns.