Hi Jimmy,
As I said earlier if you decide to buy an E620 then I assure you, you will not regret it. It's a camera with plenty of scope to develop with you as your knowledge of how to use it and skills in taking better images improves, so you will not find yourself overtaking it's abilities.
As Chris has so eloquently explained above, these are all very capable and fine quality cameras. You could buy any one of them and not be dissapointed. But to ensure that you really like a camera you do have to try it for yourself and don't entirely rely on the opinions of others. You are going to be the one learning how to use this camera, so the easier you are able to find your way around it to access all the various settings, the less frustrated you will be with it. This in turn will make the whole learning process all the more enjoyable and easier to remember. And lets be honest, the reason we all take photographs is because we enjoy it! It gives us a buzz when we produce an image that we like. It gives enormous satisfaction when you know you've got something just right!
So as a starting point the Olympus is cracking value for money and with the two lenses thrown in as part of the package it will give you much more flexibility, but try before you buy if you can.