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!
EDC Rotation: PITS, Shaman, CF S90v Shaman, Ikuchi, Amalgam, CruCarta Shaman, Lil Native, Sage 5 LW, Ouroboros, 4V Shaman, Watu
Always in Pocket: Hawkbill Dragonfly 2 H1
Special and Sentimental: Southard, Smallfly G10, Squarehead LW, Calendar Para 3 LW, 40th Anniversary Native
Would like to own again: Sheepsfoot Caribbean
Wishlist: CQI Kapara, Tanto PM2, Shaman Sprints!