(Second pass-through on this post - Blogger ate my first review!)
As I have recently reviewed that Advanced Edition Companion, it seems sensible to follow it up with a review of another Labyrinth Lord sourcebook, Original Edition Characters. Like the AEC, the OEC is designed to help imitate a slightly different style of play, that of the original '74 D&D edition, but with some minor variations. It also has a second purpose, serving as a player's handbook to the game itself.
Physically, another good book. (Still no index, though!) You get a 64-page digest sized book, with some nice illustrations and generally well laid-out; everything is in a logical place. Everything needed for the generation of a Labyrinth Lord character is present - classes, races, equipment lists, and spell lists. As a player's handbook, it works well.
As a way of moving Labyrinth Lord closer to the 'original three', it works as well. Looking under the hood, for the GM it is essentially the same basic system in any case, so there is no need to make any changes there. The changes is for the players, who have slightly different options to choose from (no thief, elves effectively as dual-class characters), and a somewhat different ethos to the game.
Do I recommend this? Let me put it this way - I'll be picking a copy up for each of my players for my next Labyrinth Lord campaign.