from my experience with inverter vs. non-inverter models under constant on conditions (24/7, set to 28/27 degrees only, non-full load, regularly cleaned, no chemical wash, dismantling only rarely if at all) i can say that after a few years - no matter which model you use - non-inverter units start to give issues at the outside compressor due to the constand on/off. cheap units tend to last maybe 2 yrs and then the bearing rattles. same goes for the inside blower fan. better brands (carrier, panasonic, etc.) tend to just have the outside compressor problem, the blower fan and stuff seems to last and stays quiet. also the outside compressor casing rusts, the cheaper the faster.
i never had any other major issues with any aircon i used like this, no controller board spoil etc.

inverter: running 24/7 now for up to 7 years: issues (all panasonic) none besides the 2 HB horizontal flap motor died on me (flap falls instead moving up / down so i set it not to move). no getting noisy, nothing. outside also nothing besides a bit of rust near the connecting pipes at the casing. makes sense, no on-off all the time makes them last actually longer a bit.

i thought we established before that the outdoor condenser size is not related to the units performance??? come on - you do know how a heat exchanger works dont you?

not sure about samsung A/C but the panasonic ones you can dim the LEDs. i found the blue light also way too bright. stuck paper over it until i noticed you can dim the LED to a much more appropriate setting. this applies to all their inverter units i have units from 2008-2012 and they all can be dimmed.

Press and hold the up-arrow @ the timer panel for 5 seconds to dim or restore the unit’s indicator brightness. Pretty nifty.

you're welcome. the brightness drove me crazy in the night. once you dim its OK. the dim works for every inverter A/C since 2007. i have various units to try on. for other manufacturers you might have to call to check. esp. blue LEDs are very annoying and most of the times too bright.

i have various models. did you read my comment? you can simply dim the unit. no need to mask the LED.