As Mike has stated a lot of it is in the post processing to really make the MW pop. As an example look at my youtube vid here
http://youtu.be/ZJpNkXBvPjs In the very last sequence I show the raw unedited images that went into my "Midnight Rainbow" image and then the 'after' version.
The 50mm F/1.8 'nifty fifty' is a great lens and should be in every Canon users kit but it is not very wide for landscape Milky way shots. You would also be limited to about 8 second exposures with it before the stars trail too much.
The 14mm that Mike also mentioned is probably the best bang for your buck astro landscape lens. It will give you all the goodness of F/2.8 but on your crop sensor 60D I wouldn't push your exposure times past 20-25 seconds. 30 seconds is a fraction too long for that lens/camera combination.
Having said that, your 10mm at F/3.5 certainly isn't a slouch and is more than capable of producing the goods. Thats what I used to shoot with before I went full frame and the 14mm F/2.8. Some examples of my earlier work at 10mm and at F/3.5
http://500px.com/photo/5419839 http://500px.com/photo/5224879 http://500px.com/photo/3584589 http://500px.com/photo/3979581 http://500px.com/photo/6101196
Cheers
Greg