Recs.
Updated
SpecsUpdate
Pros
Pro Plays like original with more portraits available for PCs and the Black Pits arena combat module
Plays just like the original game with the same hidden treasures. When creating PCs, you have more available portraits to choose from. Black Pits Arena combat module is awesome, but gets really deadly in the later rounds.
Pro Plays like the original one with visual improvements and fixed bugs
Beamdog has been working hard to restore and improve the original game, while preserving its identity. Some bugs have been fixed, and the infamous pathfinding has been improved (in the latest patch 2.6). Multiplayer has been restored, since it wasn't working in the original game anymore on new OSes.
They have also brought the experience on multiple platforms.
Pro One of the best cRPG experience still to date
The story telling, the quests, the exploration of areas of the Sword Coast, the impressive coherency of the implementation make of this game a reference in the history of cRPG games, and is still considered as a benchmark of the genre, except of course for the graphics and sounds.
Cons
Con Modded original can offer better experience
Depending on if one want to go through the trouble, but modding the original game can offer a better experience over this enhanced edition.