I myself bought a used 5D mark II in April coming from an old 10D :-D I wondered why I did not make the change before, but moneywise it was a normal decision... Besides here in Finland taxes adn prices are much higher in general.
I am having a lot of fun. Only having the possiility of shooting at ISOs higher than 400 with relatively low noise is amazing.
It increased the situations in where I can shoot and the quality of the images as well. (Besides, got a 24-70 L).
In fact, if I am willing to purchase some lens in the future, I would rather save for the L versions. Trying to get a 24mm L II at a decent price now... Found one in lensrentals.com but besides that they dont ship tu EU, they may nail me with the taxes in Finland so it is not worth anymore.... but anyway...