The PS Audio Stellar is a new item that was most likely introduced very recently in your system. So my question is this: did you develop this desire for more dynamics before you purchased the Stellar or after? For this it would help to know what phono amp it replaced and also the rest of the system. As it stands now, anything could be the cause of your discontent.
I do not know your analog front end from personal experience, but these are highly respected components, including that Dynavector. As for the Stellar, maybe it is 'stellar' especially at the price which is 'sane' for a change. But perhaps it doesn't sit well with your pre amp, there's no way to tell.
However, do not for a moment believe that one of the current top price MC's will significantly improve on the Dyna in the dynamics department, although more fine detail can be retrieved by some of these. I have many MC's from current to quite old and there is no across the board improvement in moving coil cartridge design, no matter what the reviewers and some posters here would like you to believe. My Dynavector Karat Nova 13D from the 1980's (to stay with Dyna) is no less dynamic or detailed than - say - my Ortofon MC Anna or A95. An early 2000's original cantileverless Ikeda 9 Rex will be hard to beat on dynamics by ANY new cartridge, regardless of their 'break through' design, marketing or price.
Musicality is a personal call and not necessarily related to your other demands and very much the result of system synergy. To my ears and in my system some of the 'old' cartridges like Miyabi Standard or even Fidelity Research FR-7fz are more 'musical' than any of these modern 'state of the art' cartridges. So think hard before you fork out at least 7 or 8 grand for one of these.
