The 60D is a very nice camera. It doesn't have the frames per second and buffer of the 7D, but it also doesn't have banding in its sensor. With a speedy card, I can get about 16 to 18 RAW images at top burst. The center point AI servo focus is quite good for birds in flight, but it still can drop focus when panning across a busy background. That's where the more sophisticated focus algorithms of the 7D shine. I haven't checked the 60D shutter count recently - probably only 30,000 to 50,000, I can't remember how many times the numbers have turned over. I bought it in late 2010 and it has been functioning perfectly. I got the 6D about a year ago and the 60D has been partly retired to family occasions (EF-S 15-85mm is a great walk-around lens) and "mostly birding" (400mm f/5.6L) trips. The 6D is for landscape and night/astro work. The 60D was fine, but the 6D is amazing for astro, and there is even an Astronomix clip-in filter system now for the recent Canon FF cameras. I love the tilting main LCD of the 60D, especially nice for use on tripod in awkward positions, eg, macro on ground level. A given object, say, small insect, fills up the screen at 1:1, whereas on FF the insect would be rather small at 1:1. That's the joy of using APS-C format for situations where you need as much magnification as possible, which is macro and long telephoto work.
If I like and buy the as-yet-not-announced "7D2", I may do a full-spectrum conversion on the 60D. The main reasons I am considering the "7D2" are burst rate, larger buffer, better AF than the 60D, which may make a difference for birding but not for other things I shoot.
Helluvah camera for 460 bucks! Have a LOT of fun, and with the money saved consider buying one of the better zooms rather than the kit lens, although even the kit lenses have come a long way since 2010.