the best not always the best

Why are you continuously trying to change what you already think sounds pretty good? Rather than focusing on what is better or worse, consider shifting your focus towards what works. Your current setup sounds well balanced and I'm not surprised that it's capable of presenting a very musical performance.

Cody: Is the Creek, etc. your second system or is it your main system that you have tried adding on to or upgrading? I don't quite understand your post. I think that most people will require knowing exactly what you have and what you are trying to achieve in order to give good advice, if that is what you are asking for.

There is a lot of tweeking you could without replacing the system. Demo other interconnects and cables; try different speaker placement; modify room treatment/decor; get a power conditioner if you don't have one or demo a better one; add a musical subwoofer like a REL Stratus.