You'll need to provide a bit more info to get a steer, there are plenty on here who will provide that without resorting to shameful responses that attempt to belittle the questioner. In fact, there is nothing more irritating - disgusting actually - than people with experience sneering at questions from those who are likely rookies. Photography and I.T. are two fields I've seen it happen a lot.
So, I would suggest you consider offering the following information:
What prior experience do you have? Are you a complete novice looking to buy your first camera? Are you looking to upgrade, if so from what and why do you want to? What can't you get out of your current kit that you'd like to be able to do?
Are you looking at an SLR-type with lots of features or something of the "point and shoot" type?
Do you know what the subject will be? Family snaps, landscapes, sports, portraits or what? How often will you use it? Do you want to spend £600 on kit that you'll use a few times a year taking snapshots of the dog/kids/Xmas Dinner with the Party Hats?
Please, don't tell me you want it because you've agreed to be someone's wedding photographer! Reading between the lines you aren't ready for that yet! :winkold: