Not a winner-and-loser comparison, but a story of evolving preferences.
Not a winner-and-loser comparison, but a story of evolving preferences. Sidemount is where most of my current diving life happens, so the details that once felt optional have become very obvious after repeated use.
What I notice in sidemount
The XDeep Stealth 2.0 is a system I know well and have taught with. Moving to the Katana did not make the Stealth bad; it changed what I valued after more experience.
I became more sensitive to valve placement, factory rigging, adjustment speed, reinforced areas and how quickly a system becomes 'mine'. Equipment design evolves because manufacturers hear divers, and divers evolve because repeated use teaches them what they notice.
The practical point
For me, the value of the system is not that sidemount is automatically better. It is that this configuration solves the problems I currently care about with very little wasted hardware.
This is not a “winner versus loser” comparison
The Stealth 2.0 served me for years and I taught sidemount with it. I do not rewrite that history simply because I now prefer the Katana 2. XDEEP’s Stealth platform remains highly modular, with different wing capacities and configurations aimed at recreational and technical use. It is an example of a system that rewards careful personal setup.
My move to Katana was about evolution of preference: I liked its factory readiness, the way the bungees and valves were presented, the back reinforcement, adjustment and overall feel. A diver who enjoys configuring every detail may prefer the opposite characteristics. That is exactly why comparisons should explain the user, not only the products.
Why sidemount changes the equipment question
Sidemount is not simply backmount with the cylinders moved to the sides. Cylinder position, hose routing, regulator orientation, attachment points, buoyancy distribution and access all interact. That is why small details become important: the length and position of a bungee, the angle of a first stage, the position of a lower clip, whether an S80 has started to become positive, and whether an accessory can be removed for a particular dive.
Most of my diving today is sidemount. I may use one aluminium S80 for a recreational dive and two for more demanding or technical dives. One of the practical benefits for me is logistics: cylinders can often be placed in the water before I kit up, so I am not carrying the complete mass of the system across land. Underwater the cylinders become part of a very clean, balanced configuration.
Minimal does not mean stripped of safety
Minimalism only works when the remaining equipment still covers the actual problems. My two-cylinder setup gives me independent gas supplies. My current regulators keep a mechanical pressure indication even though wireless transmitters are my primary way of seeing pressure. A drysuit may provide an independent buoyancy source on a technical sidemount dive where the wing has a single bladder. Those are deliberate layers; they are not decorative redundancy.
The same thinking explains why I do not automatically fit every possible clip or accessory. If I know I will carry a cylinder out of the water, a neck clip can be useful because I can transfer the load to a D-ring rather than the bungee. If I will leave the cylinder at the water’s edge, that same clip may add no useful capability. The correct answer depends on the dive.
Configuration has to be lived in
A sidemount system can look perfect on a floor and be irritating in the water. The test is whether I can reach valves, switch regulators naturally, read or recover pressure information, donate gas, control buoyancy and propulsion, and keep the system quiet against my body. That is why I value the details of my digital sidemount gas-management configuration: information moved to the wrist, while mechanical backups stay small and protected at the first stages.
What I check before calling a sidemount configuration finished
I want valve access, stable cylinders through the gas range, repeatable regulator switches, uncluttered donation, usable inflators and a body position that does not require constant correction. Then I deliberately move, roll, reach and breathe from each side. A configuration is finished only when it still works while I am doing the dive rather than posing for a photograph.
Current manufacturer context
XDEEP currently publishes Stealth 2.0 variants with different bladder capacities and recreational/technical orientations, reinforcing why I still regard the system as a serious platform rather than an obsolete predecessor.
XDEEP — Stealth 2.0 sidemount system
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