I think you have to get the sample packs and see what you like.
The Harman Gloss can suffer from head strikes at the edges when using the B9180. There are some solutions but you want to be aware.
Also, go look up the Yahoo! B9180 group and check with them.
Edit: I love the Harman gloss but it and the harman matte are the only two baryta papers I've tried so far.