Lui is a 5/8th
Moltzen is a hybrid 5/8th and 1/2
Lazarus is a 1/2
Lazarus is definitely the most adept at playing a traditional halfback role, whilst Lui is most like a genuine ball playing 5/8th. Moltzen is in between, in the fact he has all the skills of a 5/8th yet plays like a halfback in a lot of instances.
If we're planning on playing direct of Farah being our dominant organizer, I don't think Lazarus falls in. However, if we're going to take the pressure of Farah in terms of organizing, Lazarus would definitely be the best bet. With our style of play, and as a result of being my favorite player, I'd take Moltzen 😛
I don't think anyone's playing style is set in stone, especially with the way the 7 and 6 is played today. From what I remember, Johnathan Thurston used to be a 5/8th too.
I like all 3 guys, and with the way I perceive that they are viewed by other teams at the moment, I can't see why we won't keep all 3 and pick the best of the bunch. Lazarus won't cost much, either will Lui unless he starts killing it.