Depending on the information you area looking for, I read MacWorld UK (much more in-depth than the US version), as well as MacDesign. MacAddict used to be a good magazine (I still have their first issue), but has since been taking slow downward spriral -- they're beginning to repeat themselves and useful content is getting thinner. Or, I've been growing beyond it's core focus group...
Although not necessarily Mac-based, I also read ComputerArts, 3d world, DV and Photoshop User. All typically contain 50% Mac related items, but are more focused on the creative industry as a whole.
Cheers,