Merino Clothing (base layers, etc)

So. Uniqlo merino sweaters:

They're great as something over a layer.

i got a merino sweater from uniqlo, it's really good for everyday use but not for cycling, it's nowhere near as nice as my 'proper' merino gear

Baselayers tend to be a very fine merino - the type you can have against your skin without itching. A cheap jumper will not be such fine merino, so it will have worse wicking and insulating properties.

Just to clarify.