Hi Sam
They're not really giving you the answer you want are they.
Sadly they are right - for whatever your given budget you will get more camera for your money second hand than you will new - and thats because lots of us are seduced by the manufactures latest offerings and put our perfectly good 2/3 year old bodies on ebay or where ever. (Unless you can bluff the wife/girlfriend/husband etc into believing you need them both).
But it you really hanker after the latest whatever - which comes in just over what you can really afford but you convince yourself that the results will justify it - don't worry:-
so do the rest of us
But in my humble opinion there is more to taking good pictures than the man behind the camera - whatever the wisemen say - cos I would suggest that you will be happiest - and therefore most succesful - with what your really wanted.
So - yes the glass is probably more important than the body - but go with the heart not the head - love whatever your buy

and share your pictures with the rest of us