Read my review of the standard version here:
https://www.backloggd.com/u/DayChan/review/865606/
Professional is a great enhanced version. It contains 200 additional monsters, which brings the total up from 500 to 700. This makes it an even better monster tamer than the masterpiece that it already was. There's also additional post game story scenarios which tie the game in with the first two DQMJ games even more. There's no reason to play the original over this version, but either way you will be experiencing one of the best games on 3DS.
https://www.backloggd.com/u/DayChan/review/865606/
Professional is a great enhanced version. It contains 200 additional monsters, which brings the total up from 500 to 700. This makes it an even better monster tamer than the masterpiece that it already was. There's also additional post game story scenarios which tie the game in with the first two DQMJ games even more. There's no reason to play the original over this version, but either way you will be experiencing one of the best games on 3DS.