The best Monopoly is the one on the NES with a four-score adapter :-)

All the standard rules, no-one can modify them, runs the auctions for you, plays very fast. D-pad and four buttons (counting select and start) so even young kids (or oldsters) with no gaming experience can pick it up fast. I wouldn't ordinarily recommend a video game as a complete replacement for the physical version of a board game, but in the case of Monopoly, yes, definitely, find the simplest video game version you can and use that.