Hi,
I think you may be a bit disappointed moving from Sennheiser 650hd to a set of speakers that are not somewhat comparable in terms of SQ. HD 650 being open back does stage wide.
Its worth taking some time to consider the important factors like your room size, it’s acoustic propertie, your listening position etc and then shortlist suitable speakers within whatever budget you have in mind. Otherwise you may find yourself upgrading quickly.
There are several experienced and helpful FMs who could advice you better if you share dimensions of your room, maybe pictures, some details of your source material, transport, amplification etc. A question frequently asked is to define as clearly as possible what you want to achieve in your bedroom in terms of audio qualit/experience and your budget.
i agree with DB1989 that coming from good quality headphones you may not be satisfied with BT speakers or sound bars for long.
I have not heard the Dayton Audio or Swans so can’t comment. But if you are going the powered speakers route, there are more and more WiFi networked powered speakers in recent years. I know ATC, KEF, Dynaudio, B&W, Dali all have powered bookshelves. There must be others for sure.
finally, I suggest buying only after auditioning. (At home in the room, if you can)