Anyone using an under-sink chilled water tap in the kitchen?

[Mum5net]

Recently moved. Haven't got funds to change the kitchen out. The integrated fridge freezer has no option for cold water dispensing. As I don't drink tea or coffee, chilled water quite important to me.
Has anyone tried one of the units that fits under their kitchen sink with an additional tap that can give 5 litres of cold water per hour. The little boxes don't seem too intrusive and start about £300. Just wondering if anyone has any experience of these?

We have a Quooker, which also has a chilled-water function. We use it a lot.

Thank you @CheltenhamLady I’ve asked for a price of just the chilled water box as I suspect I will use it a lot, too.

Aqua taps are great

I don’t have one at home but we have one at work and I love it. I don’t drink coffee or tea either and love a fridge cold glass of water. At home I just keep 2 large glass kilner bottles in the fridge door and rotate them so one is always full.