For me, the manix represents a set of attributes that doesn't overlap too much with the PM2. It lacks the stock thickness to (imo) reassure the user that it can stand up to impact-prone environments, despite having a strong lock. It's wide in the pocket and not very fidget friendly. However, it has a much more appealing blade shape than the PM2, is definitely ergonomically better in hand, and is truly ambidextrous.
If i were to update the Manix to my personal specs, i'd modify the blade shape to something more like the delica with a drop point to improve tip strength, use a slightly thicker stock (0.5mm maybe?) and ease up on the lock sprint stiffness. Other than that it's a very solid choice!
Spyderco Collection: Always in Flux...
Southard, Zulu, PITS, Chokwe, Squarehead, Shaman, CF S90v Shaman, Ikuchi
40th Anniversary Native
Would like to own again: Lil Native, Para 3 LW, Hawkbill Dragonfly 2 H1, Sheepsfoot Caribbean
Wishlist: Kapara, Lil Chokwe, Tanto PM2, Sage 5 LW, Shaman Sprints!