It is better if you give some details like what you are expecting the sink to be.

Double, Single?
Stainless Steel (SS) vs Granite?

Personally I bought Haustern - is on the more high side though affordable range.

Try to avoid those Facebook recommend one as they can just easily take one from China Taobao and rebrand to theirs and advertise through FB. Got many experiences where as people bought it and it got rusted although is claimed as SS304.

Suggest to avoid those nano-coloured sink if possible, since there is no scratch-proof-forever --- you install a sink which will likely last for 20 to 30 years, and I am sure there will be scratches along the way.

Hope this helps.

Go for Haustern if you have some budget otherwise brand like Sorento still not bad.

The trend now has moved away from double sink to single big sink, since the other is usually superb less utilized but it's still a matter of personal choice end of the day.

If you want Granite then Blanco will not fail you, though keep in mind that you need to take care of it more.

Need to do more research where - I generally buy online most of the time because the same sellers from shop vs online at different price. Of course you need to do some homework to research the online sellers and still have some risks in term of transporting the goods.

Thickness 1.0mm minimum and above is good enough but reputable brand usually starts at 1.2mm thickness.