Do you have a place to dry your clothes? If yes skip the dryer as it will not be necessary.

I'm using a samsung washer dryer combo.

If I have extra money, I'll get a separate unit. Not sure if its just mine, but the drying process took a while about 2-3 hours. So during that time, I cant use it to wash another round of clothes.

To cut down the time, i wash all the clothes and hang dry the big clothes and only dry my kids clothes.

I dont have exp with LG, but I'm pretty much satisfied with what I'm using now.

You're mixing wash with other color cloth. Especially the new cloth.

Wash new cloth separately few time before mix together. Once the color dye stabilize, it won't effect others cloth.
I m using LG combo. If your house has 2-3person, a combo is fine. More than that, a separate unit will do the job faster.

Combo requires cleaning maintenance to clean the internal cloth lint and sensor. Once this sensor and air intake clog, the drying time is longer and won't dry enough. DIY maintenance is not difficult.

I would prefer LG as the spare part is cheap to replace. My unit has been breakdown 3x and currently waiting for parts for the motor side. Parts replace is reasonable and cheap.

I would go for LG.

i think its slightly different although the purpose of function is supposed to be the same (ie: quick washing)

Turbowash have water jets that spray out from different directions onto the drum. I don't think Quick30 have the same thing....
[EDIT] I read your screenshot again and i think you misunderstood

The reply from the CS shown in your screenshot seems to imply S2W is the newer model, since Turbo Wash is meant to replace Quick30