Not all RBAs leak, but most Genesis do but I hear some dont. I have an Odysseus and it does not leak, but its not a Genesis. Every type of system has its quirks/ pros and cons. But for me, leaking would be a definite con. I have to have something that can be put on its side or in a bag.
Many love the Genesis experience , I tried it but at least for me it was not for me. I like the Odysseus , but for many its not for them, be it the taste of the silica or the joining of the resistance or non-resistance wire.
At least there are choices and when you find one that works stick with it.