high end speakers? ... not sure what brands/model

Your speakers are definitely average in the grand scheme of things, as is your amp. What is it about the Paradigms that you aren't happy with? You can always get better sound if you spend a lot more money, but only you can decide where the balance between price and performance lies.

I'd suggest finding a local dealer where you can audition some different speakers and see what tickles your fancy. Make sure you're gaga over a particular speaker, not just "that sounds pretty good". Your dealer might let you borrow it so you can audition them in your own room. My theory is that the speaker-room interaction is much more important than is generally appreciated. (And so is the positioning of the speakers.)

There are hundreds of brands of speakers, and they all sound a little different. Start listening to some to get a sense of what you like and dislike in a speaker.

Just my 2 cents.

Michael

I apologize for not proofreading my initial post. I meant to say that "Your speakers are definitely ABOVE average in the grand scheme of things, as is your amp." You have a nice system that bests that of most people, and uses high-value components.

I'm not sure what you mean by wanting more "richness" in the bottom end. Do you mean more bass weight? If so, maybe your best option is to add a subwoofer to shore up the low frequencies.

Take your time, and try to audition speakers in your own room, as that will give you a much better sense of how they will perform in the context of your system and room.

Michael