@expresstrain
I have a feeling I will end up getting stands also, but it’s a process...
Seems like your requirements are a moving target. If you are entertaining the idea of stands, then a floorstander is best sonically to get significantly better bass. You can go subwoofer but that will $cost. Note also that speaker placement is also sonically important as most should be brought away from the walls into the room.
If you prefer nearfield listening at the expense of bass extension and soundstage quality, then maybe bookshelf may be ideal for you. But if you are trying to maximize sonics……
50wpc @8ohms is on the lower side, so you’ll need a somewhat efficient speaker.
If you like the Klipsch RP-600M, then perhaps going to their related floorstanders RP-4000F, RP-5000F, or RP-6000F (95/96/97dB) may be ideal with more bass.
I agree that Tekton is a high value option but they are rather large than average speakers. You might be able to get into a used GoldenEar Triton Seven or a used Monitor Silver speaker.