Sorry to hear about your loss. That looks like it was a fine system. You sure had some nice components. I will guess that you are looking for new equipment of similar quality. That's not going to be cheap, considering the quality you're used to.
My suggestion is to start looking at speakers first. The usual suspects with good audio characteristics and reasonable value are B&W, Dynaudio, Focal.JMLabs, Paradigm, .etc, but there is a boatload of other brands that are genuinely worth considering, like Salk, Monitor Audio, Acoustic Zen, Martin-Logan...I mean there are literally dozens or hundreds of speaker brands and models to choose from. It's always best if you can take the time to audition speakers to find the brand and model that best suits you listening preferences, room setup, genre, etc. Speakers are a pretty personal selection. If you describe how you intend to use the system, what you listen to and what type of sound you prefer, we can likely steer you in the direction of speakers that have the characteristics you are looking for.
Once the speakers are chosen, then it's time to search for the proper amplification and processing. Depending on what speakers you choose, a mid/high level receiver might suffice or you may want a separate amp/processor.
