According to me you have a better chance to play against a good player at US West, and then improve your skills.
Here is a list of the most popular channels at the both gateways. The "Pop" number indicates how many visitors the channels get. 40 means that it's full almost all the time!
Channel name | Gateway | Pop |
op 30dom US West 40
Brood war WGTour-1 Europe 40
Brood war kor-nexus US West 30
op yG- US West 15
op 3.33 US West 15
op S.G- US West 12
op Sasin US West 12
op RaCe US West 12
op QoO) US West 12
op nal US West 12
op Red- US West 10
op T3- US West 10
op into- US West 10
op dak US West 10
Z-Zone US West 7
op ArtOf- US West 7
op in- US West 7
Brood war Rush US West 7
op 18u US West 7
op EROS- US West 7
op ever) US West 5
Brood war kor-sonic US West 5
op 4tim US West 5
op truth US West 5
op toss- US West 5
1004 Europe 5
clan namoo US West 5
op Joypop- US West 5
op Inca US West 5
op MDK) Europe 5
op Tech- US West 5
op Wis US West 5
op nt- US West 5
BBlade US West 3
brood war silent US West 3
op AKUTA US West 3
op GSP- US West 3
op uT) Europe 3
op is- US West 3
op Photo- US West 3
op WN- US West 3
op GNH- US West 3
op Str- US West 2
op Musa- US West 2
op 18a US West 2
op Damngood US West 2
op Nsp- US West 2
Spirit US West 1
XiC Europe 1
op Pro-gaming Europe 1
op Fight-Klub Europe 1
Note that the "Country-Channels" are not included such as "Brood war swe-1" or "Brood war deu-1" (Which usually has got many visitors).
Links
The MDK) clan home - Source