Hi, I am new on here and have just purchased a new 50d from Singapore when I was on holiday, it was a crazy price so I bought it. I had been using a eos 350d.

What would a good lens be for a general walkabout lens for the 50d. I have heard that the 50d needs a very good lens to get good resolution?

The 2 lens I am looking at is the Canon 18-135mm f3.5-5.6 IS and the 17-85mm f4-5.6 IS. I have tried them both today and they seem to be very good lens. Is it worth e extra few hundred bucks for the 17-85?

Thanks

Damien