Upgrade Path?

Hi all,

I currently run a (unmodified) Transporter into a Creek Classic 5350SE, and out to a set of Paradigm Reference Studio 60s (v.5 - latest ver.) in a small treated listening room. I've had this setup for nearly 3 years (the Creek for much longer), and am starting to think about changes.

While I'd initially thought upgrading the Transporter was in order, I'm coming around to the idea that my trusty Creek is the weakest link in the chain. I don't need the system to go super-loud - but the system's not feeling punchy enough for my taste any more. Dynamics aren't all they could be, regardless of volume. I like a big soundstage. Mine's pretty deep - but not very wide (this I recognize could be a limitation of my small room). I like very well-defined bass. I get deep, powerful bass - but things get a little muddy on fast bass lines. When I bought the Paradigms, I did so after many hours of listening to the same tracks on many different speakers. The final group was auditioned with my Creek, and I chose the speakers that sounded best with my little integrated. The Creek was certainly a limiting factor back then.

I'm wondering what you all think my upgrade path should be here:

*Upgrade my amp, then consider upgrading my source
*Upgrade my source, then consider amplification
*Do it all at once, with something like the NAD M2.
*Other ideas?

Thanks all!