Sony and Nikon are getting tempting, Nikon due to D3/00, Sony has had pretty good bodies for a while, but now that they are getting 24-70 2.8 70-200 2.8 and 300 2.8, which stopped me from going with them when swapping from Oly...
And with A900 sony could take a bit of the market. They even have some real nice primes

