I don't have much experience with other SE plugins but I think Genesis Pro sounds quite decent. The closest sonic analogy is imo Parawave Rapid. Rapid sounds punchier, bigger and more hi-fi but it's a top priced synth after all, not really fair to compare it to an 1 EUR one.
All in all, I think Genesis sound good enough to be used in actual projects. It's more EDM-ish kind of sound, don't expect high quality analog sounds from it but what it does it does ok, imo.

