If you are in the U.S. you can get the 430 EX II refurbished from the Canon Store right now for $204. Or you can buy it new for $259. It's a great flash and the main practical difference from the 580 EXII is that you can't plug a battery pack into it.
Eventually, if you really get into flash, you will want that option, but when you reach that point, you can probably sell the 430EX II for not much less than you paid for it.
The other primary drawback is that it uses the optical trigger slave function (like the 580 EXII) instead of being a radio slave (like the 600 EX RT). Again, eventually you may want that function, but initially you won't miss it. The 60D can be used as a flash controller, so you can experiment with off camera flash with the 430 EX II.
A word of caution though, it is a "gateway drug" to Speedlite dependency. Once you get started down that path, there is very little hope of turning back and one day you will wake up and find yourself in bed with four or five 600 EX RTs.