US and UK needle sizes
So I was looking at the conversions between UK and US needles sizes, and I noticed there's no equivalent for the US 4 in UK sizes.
Is the .25mm difference between US4 and UK9 or 10 really noticeable at all?
The reason I ask is because I currently have a set of US sized 16" circs, and I'm thinking of buying this set of 17 sizes of 32" UK circs because they're on sale really cheap. But I don't want there to be a noticeable gauge difference if I have to decrease from UK size 10 to my 16" US4 circs (like for the sleeve of a sweater or something).
Should I just try to find a set of US sizes instead, or should I go for the UK sizes?