I have the non resonated cobra and I absolutely love it! It really is personal preference I was so torn on which exhaust system to go for but I am so glad I went for the non resonated option. Personally for me I don't think it is too loud at all but it sure does make a nice noise when accelerating, it does drone a bit but it is far from ridiculous.
Maybe take into consideration your previous car history to help you make a decision for example what your used to, that is basically how I made my final decision.