X100 is not recommended for beginner. X100 is already a very good camera when it comes to output because it can generate incredibly good color. It can nail the exposure and white balance correctly. However, it is haunted by many weakness and the most notorious is the focusing. It is very difficult to lock focus if either your or your subject is moving. However, X200 will be a killer if they are able to solve most of the problems. But then, your X100 will be worthless because none of the parts are reusable. The EVF, the Lens, all cannot be used in X200. You have to upgrade the whole things.
Nex 5N is a good camera, but camera is only half of a system. The other half is lenses. NEX has poor lens choice. and their lenses are very big. Also NEX has poor inventory management, it is not easy to get their lenses. Say 50mm f1.8, it has been release after many many month and yet not much people can get their hand on it, However, newbie is still better serve with Nex 5N + kit then X100 (I have both Nex 5N and X100, I have sold X100).
But what I really recommend is m43 system. And after playing with so many serious compacts camera, I am now sticking with Panasonic GX1. And I believe GX1 with the double kit lens (not the single pancake power zoom kit), is the best for beginners. You get 2 lenses, 1 zoom 1 pancake. The zoom let's you have the flexibility, it felt like Nex 5N with zoom. Or a lower end SLR with zoom. The pancake is very small and it make your camera very compact, pocketable, can bring everywhere and the view of 28mm is like most compact cameras. However, I don't own both lenses because I am more demanding and opted for even better lenses. But I think for a beginner, you will already be very well served with the kit lenses.
Canon G1X (dun confused with Panasonic GX1) has the same problem with X100. You cannot upgrade just the body. And it looks like a brick, weight like a brick.
OM-D? haha. Just hold it and see how it feels. 99% people like it. I am the 1% who don't like it. Remember there are many fan boys out there who always bragged about their next new toys. And also lots of bias reviews/blogs that meant to sell cameras and make commissions. These blogs/reviews love every camera out there so that they can sell as much as they can. OM-d has very very cramped buttons and thus poor ergonomics. The triangle ring for the strap on your right will cut your finger minutes after usage. The 2 rear button on the back are blocked partially by the LCD. And the EVF is in the middle and the dials less than 1cm away, so if you put your left eye on viewfinder, your finger to the dial is in front of your right eye? cramped. very cramped.
Fuji X Pro 1 is simply overprice. RM5k for a body.

Thanks for the advise..now I think I will consider for the Panasonic G1X or mayb Nikon 1 or Olympus ep3