I second the suggestion to head to the shelters and rescues - there are rescue organizations for every breed and you'd be surprised at the variety of dogs they get in (everything from really youngun's to older dogs, for instance). Many of the dogs there don't have any real problems - just sucky first owners. You get the best of both worlds - the breed you want at way less than from a breeder and you are doing a very good thing!
Of course, large breed, short hair means a Rhodesian Ridgeback
IF you have time for them...they can be a bit needy and when they feel their needs aren't being met, they turn a bit destructive just so you're clear on your neglect of them LOL
This is a bit of a hijack of the OPs thread ... maybe we should move it to it's own Search for a new dog thread!