Should I use an OEM or aftermarket O2 sensor?

[EtherealWanderer]

I have changed the O2 sensors once using aftermarket components. I subsequently purchased a full set to replace all four.

A technician advised the exclusive use of OEM sensors from Kia.
Is this really essential?
I have changed bank 2 sensor 1 times; accessing bank 1 is challenging.
I am experiencing several problems with the aftermarket sensors, which do not resolve the issue, and I am contemplating if I need to purchase Kia OEM sensors.

Is anybody aware?

[KOOLCAR]

Kia does not produce O2 sensors.
Opt for Bosch or NGK, and you will be assured of quality.
They produce superior aftermarket electronics and sensors.

[EtherealWanderer]

Thank you. I believe they belong to that category.

[Rudy7831]

Which aftermarket brands have you utilised? If the Amazon discounts continue to fail, choose for a reputable brand.

I assert that Kia employs NTK. Mando represents an alternative choice. Rock Auto offers products for your model year.

[nickoyster4]

If the malfunctioning sensors were from one of the aforementioned excellent brands, then oil burning is likely responsible for their early failure.

[EtherealWanderer]

I am currently investigating electrical issues as well. The sensors on the driver's side have not yet been changed due to their inaccessibility.
I completed the front and rear of the passenger side.