Consider future system changes. If you limit yourself to choices of high sensitivity/efficient speakers, then, now and/or future, you will be able to use lower power amps successfully. Then your amp choices become many, opportunities for a great deal for one increases, saves money, space, .. that opens the options to tube amps. Not only are tube amps lower power, among them, the cost reduces as you reduce your power needs.
A system of monitors without too much bass, properly matched to a well controlled self powered sub woofer will make imaging easier, as the monitors will make narrower sound waves, narrower faces, improved imaging, less room interaction.
Powered sub-woofer also helps you use a lower power amp, as most power is needed for controlled bass.
You can upgrade the monitors and/or subwoofer separately in the future.
Take your time, it is work to get a setup with sub-woofer right, but, then you get the advantages I mentioned.
A system of monitors without too much bass, properly matched to a well controlled self powered sub woofer will make imaging easier, as the monitors will make narrower sound waves, narrower faces, improved imaging, less room interaction.
Powered sub-woofer also helps you use a lower power amp, as most power is needed for controlled bass.
You can upgrade the monitors and/or subwoofer separately in the future.
Take your time, it is work to get a setup with sub-woofer right, but, then you get the advantages I mentioned.