You could look for an acoustic suspension speaker. I think ATC makes them as well as Harbeth, Falcon Acoustics, Spendor, Buchardt. Not sure if all those are sealed but without the port you won’t need to be so fussy about placement. Bass will not be as deep but generally it’s punchy and of high quality. No idea what break the bank means so I’m not sure if any of the manufacturers listed have a model that is in your price range.
Help Select an True Bookshelf Speaker
My son loves his music, and TV, and is not what we would describe as an audiophile. We are in search of speakers that are actually made to sit on bookshelves. So many speakers are rear ported and would not work well. Who out there is using, or have heard, models that are suitable for shelves. Oh, he does not want to break the bank.