If you're looking to buy right away, then you have no choice - the 7d was only announced 3 days ago and won't even start shipping till the end of the month.
Bruno1 there are more choices than you have listed. The new DSLR's are almost equal in great image quality. You could be more specific about what you want to do with yours as Ziggy requested. Some are better than others at specific tasks.
Dave
Comments
Bruno1, welcome to the Digital Grin.
What is your experience/background in photography?
How will you use the new camera?
What lenses are you looking at?
Any specialized applications? (Sports, low light, macro, etc.)
Total photography budget for the next few years?
The more you tell us about yourself and your particular photographic situation, the more we can help.
Moderator of the Cameras and Accessories forums
Dave
Alpha 99 & VG, 900x2 & VG; 50mm1.4, CZ135 1.8; CZ16-35 2.8, CZ24-70 2.8, G70-200 2.8, G70-400, Sony TC 1.4, F20, F58, F60.