when buying an slr ask yourself one thing... how well do you know camera's? reason im saying this is because its not just going up to a nice looking camera and buying it.. im into canon personally, if your looking for an amazing slr then either go for canon, nikon or sony.. (not saying other brands are not as good its just basic preference)... also if your new to slr's then go for a basic/amateur slr which will help you to understand what all the settings mean... if your advanced then either a 60d or a 7d is what your after.. semi-pro slr's which are awesome & not very expensive... but then if your a pro then well you have to look at higher end of the market, with prices around 5000 euros (body only).. that would be either the 5d mkii or the 1d series
then again another problem arises.. what type of photography are you into? macro? night? portraits? sports? this is even more of a difficult choice as unlike point and clicks you have a specific lens for a specific genre.. of course many multi-purpose lenses are available and hell yeah they are good..
im just giving you something to think about mate.. so like you can see what you want in photography, before you start think about which setup to go for.
hope this helps
kon