7kg WM won't able to wash curtain and bed sheet and you need to send it to dobby for cleaning, each time cost rm30-100 depending on weight.
If you are washing them once every 3 months, after 5 years you can buy a bigger WM.

I never crack my head when buying WM. Time, cost will be my main consideration.

TL are not like last time, they can wash as clean as FL like some said. KG/$ are way cheaper and can save water also.
Already using FL for quite some time, for me to really wash clean my laundry, I can't use quick wash(no doubt very fast at 45 minutes like my house's TL) but still got soap bubble if I put too much of detergent since the laundry never fully being submerged during rinsing. Have to set a longer washing cycle(or quick wash another time), so at the end, time and water wasted.

It depends greatly what you want in the end of day. Got time to waste, have to be choosy on detergents, FL is good. If you just for the sake of dump laundry in, put detergent and wash, TL will be best option, not to mention KG/$ are cheaper.
Does women's underwear also can put in FL to wash? Nope, you can't also.

Yup, manual wash due to metal inside.

No bed sheet, comforter and curtain to wash? Must consider this also. As a new family leader, you need to consider all this, else you will end up money not enough.
Certain time we can't let ladies to decide as end up you may waste money for no reason

They know their underwear can't withstand the spin speed, so they will clean their own
If appliance let them decide, they will see the wow factor first which will burn a big hole on my wallet
Food I'll let my wife choose
But not something to do with technical.