Hi all sifu, need recommendation here.

My house renovation is completing soon, now it is time to choose my water filter.

1. Last time I use the big sediment filter (those like a gas tank, some ppl called it rocket) which is cheap and available in most local hardware shop. It is good or should I change to a better one? How about 3M outdoor filter mentioned in this thread?

2. Indoor water filter + dispenser, last time uses RO, then switch to non-RO, all assembled by local technician using don't know what cartridges. Now in this thread I read about Aquaphor system, is it good? How about those famous Korean brand like Cuckoo, Coway, which are much much expensive but besides nice looking design on dispenser, the filtration technology basically same with cheaper brand?

3. On the dispenser, I saw a Korean brand called Filken with their tankless dispenser system where it is able to make water cold or hot while the water passing through their internal system, but it come with 3 stages filters and cost more than RM5k.

Please help me to choose which filters should I use.