But the cost of the Canon 5D body alone is more than a Olympus DSLR (+ 2 kit lenses) and the ZD 7-14mm combined and then some. Throw in the cost of a Sigma 12-24mm or other FF ultra-wide angle lens and you could have paid enough to buy another semi-pro Oly lens or two as well, leading to an essentially complete 4/3 system. :dunno:
However, if by 'personal preference' you meant you prefer the Canon (say) name to Olympus regardless of cost or specifications, then this discussion is rather futile. In which case, just go ahead and buy whatever camera brand you prefer, shoot and post your pics instead. No brands are perfect and all brands of DSLRs will give good pics in the right hands.