fjrabon said:You may be good with it, you may not be. Ive seen people take good care of their lenses, but one day just sorta bump it a little awkwardly and get barrel separation. My other issue with the lens is that it doesn't really have a point either. It's not really sharper than the kit lens until you get to about f/4, which is about what the kit lens can do at 50mm anyway. The whole reason you buy a 50mm f/1.8 is to be able to shoot at f/1.8-f/4. Being soft under f/4 is a killer for a prime in my book.
I'd personally buy a used D7000 and the 50mm f/1.8 AF. The used D7000 usually costs about the same as a new Canon 600D. You can find used 50mm f/1.8 AF lenses for like $70, and those things are durable.
What is the main differences from a 5100 to a 7000?