Rapha, nice but a bit pricey?

Well thats that decision at least.

So I need* to buy this lot over the winter.

Thermal pro team bibs.
Merino arm and knee warmers.
Sportswool jersey.
Gilet.

(*need being a lose term here)

Bear in mind the merino arm warmers aren't quite as warm as the fleece-lined type. They're more comfortable, and usable for more of the year, but on a few cold autumn days last year I was wearing base layer + jersey + bibs + winter tights + merino arm warmers, and a wind jacket on over the top, and not taking the jacket off. And that's SE England.

They layer really well though, basically they're like having a (removable) merino base layer on your arms.