Hey there ymonkey, here's a quick breakdown of how I came to my decision :
1) Features / tech specs
-I was initially quite set on the 7D as I've heard very good reviews about it ( it is a very good camera ), but after playing around a little with my friend's 7D I felt it was too heavy a camera to lug around all day, as I used to shoot with a very light Nikon D40. In addition, I don't do sports or wildlife photography and have no pressing need for the 8 fps shooting rate or the super fast AF. 7D has better low light performance because of its double digic processors, yes, but I seldom do night shoots so its not a big issue for me. 7D has a sturdier body too, but 60D's no toy either and I don't see myself doing any rugged shoots soon. All these superior features are why the 7D's more expensive, and I don't really need any of them, so why pay extra ?
-I also choose canon over Nikon because their video feature is better than Nikon's, and the quality on the 60D and 7D are totally identical. ( 60D records better audio than the 7D ) Of course, all these aren't important if you're not going to use the video feature.
- And of course 60D comes with a swivel LCD panel, which is very handy when shooting video or at angles where you can't check through the prism viewfinder.
2) Price
60D is the cheapest of the 3 models, which made it easier for me to decide. As mentioned above 7D is a superior camera, but I have no need for those features so I'll rather save on that money to buy a good lens. 60D and Nikon D7000 are almost the same class with very similar features, but the D7000 is significantly more expensive, which made it less attractive to me. Considering also the superior video on the 60D and the swivel LCD sealed the deal for me, and this is from someone who's been using Nikon all the time...till now.
Lastly, I think we all have differing needs so what I find important might not be for you.
BTW, here's a very good, professional comparison of the 60D and 7D that really helped me decide :
http://dancarrphotography.com/blog/2010/08/27/canon-60d-vs-7d/
I hope I've been of some help, happy shooting regardless of which camera you finally decide on ! :]