This thread is going to get shut down chaps
Not tried any of those tanks you've mentioned...but i have the Siren V2..and that's a lovely tank too. The first time i wicked that, it leaked everywhere, till i took some advice re filling it, then inverting it (the the cap on), then tighten it. This apparently is cos of the close proximity of the dome to the glass, which can cause air locks. But once i mastered that..the Siren hasn't leaked again.
RTAs in their nature..are all individual in how they're set up.