I don't have any experience with the combination that you are considering but I have a ton of experience with the Domes. Although your question is fair, it is also almost impossible to answer. Your definition of "fill up" or "powerful" may differ from mine or anyone else's. That being said, serious consideration must be made when pairing electronics with Focal Dome. While they will sound fine with many lower powered receivers and integrateds, if given ample high quality upstream electronics they will flat out perform.
If you are looking for a small form factor, stylish looks, and performance they are hard to beat. If you are looking for cinema sized output in a largish room you may want to look at floorstanders like the Focal 826V or 836V.