You've asked the equivalent of going into a car showroom and saying 'I want a good car'. The response is 'they're all good' so you really need to narrow things down a bit before you start.
Do you want a zoom lens or would you be happy with a prime. Nick's happy with a prime but I hate the idea.
Do you want an OVF/EVF or is the rear screen good enough? I won't buy a camera without an OVF/EVF but I'm old and I can't see the screen without glasses.
What's your budget?