The best translation:
The Buss translation is the most modern, and reads most fluidly. A quick example comparing this translation with the one found on Project Gutenberg: PG - His wife visited for him, and this was the received thing in the world, where the weighty and multifarious occupations of the magistrate were accepted as an excuse for what was really only calculated pride... BUSS - His wife visited on his behalf, this was accepted in society, where it was attributed to the amount and gravity of the lawyer's business -- when it was, in reality, deliberate arrogance...
Source: amazon.com
http://www.penguin.com.au/products/9780140449266/count-monte-cristo