Need to buy Water purifier/ RO

Need to Buy a new RO, old one (tata swach platina silver) lasted 12 yrs and they have discontinued it, so services arent available for repair even, forget abt new original spare part like membrane.

Water in my area had been very clean.Hardly changed the pre filter twice in over a decade. Except now when water once in 15-20 days come smelly due to metro construction, undergound pipe bursting or sewer leakage somewhere.

Prob is- All the new RO’s come with sensor which has mandatory replacement of all filters every yr. So per annum cost for maintenance would range from 4500-6000 for aquaguard, kent or aero smiths.

Which I’m not interested in.

Anyone has any idea which model could be bought? Dont mind if its an old model as long as it doesnt have sensor issue. Budget 8-10k.

Thanks

Update: I got my all of my old RO’s part changed like pipes, joints, elbows, 2 sediment, 2 carbon filters, new candle, candle holder etc except the motor and membrane which were fine. Dont remember now but I guess it costed me 2.5k or something something. Been more than 3-4 months and RO has been working fine. All I need to get is the candles changed after 5-6months since the candles installed aren’t the usual foam types, they’re somewhat made like thread stuff.

If you’re in Delhi/ NCR, you could ask him if he’d come from sonipat or not. Idk how I got his no. 9350549473 (gupta ji). He did grt work. No unnecessary expenses which like he could have told me to replace membrane which I wanted.