The Tugboat V2 is a nice flavor RDA. IMHO, it could use a little bit more airflow. As Tim mentioned, you'll get all sorts of recommendations. However, only you can decide, which one is the best. That being said, the Mutation X V4 seems to be a good RDA (haven't done a build on it yet). Depending on your build, you can utilize it for flavor, or clouds. The Airek is also a RDA that you can use both ways, depending on how you utilize the sleeves. I actually like it a lot in "flavor mode". If you find a RDA that you might like, try to find some reviews on the tube.