I don't visit Sumthing Digital all that often, but today I see that they have a great promotion: 20% off! That's a good $2 - $4 savings per album compared to the Canadian iTunes store, which has also dropped some popular titles out of their catalog like BCR. I've attached this post to some of my favourite titles and composers available. They serve up DRM free (and ID3 free :p ) MP3s, but they do use a Java download manager so be ready for that.
To access the discount, use the code right in their Promotion dropdown. It will show up when a disc is added to your cart. Obviously this kind of thing is normal for them if they have that dropdown, but I remember the last time I used the site there wasn't a special running.