While I really like the Stealth and it is one of the more innovative Razor copies I do not like the notion that it is the 'best' system, actually quite good though.
There are several systems that imitate the Razor nearly perfectly: Agir Brook, XDeep Stealth, DirZone Diamond, DiveSystems Manta and many others essentially allow everything the Razor does (most miss the Razor-pouch, small detail easily fixed).
There are always some compromises though, mostly it is wing size and design:
To stay with the Stealth as an example it its less durable than a system made entirely out of steel plates and a few strands of webbing and also more bulky.
The extra padding also increases buoyancy minimally.
Main complaint is always the pull-dump, however.
Personally I like the ambidextrous idea, but in practice there can be situations where it will be next to impossible to reach the pull-dump at all with a fully inflated and probably dislocated wing (not a big problem with the right prior training, however).
I also dislike the fixed position of the inflator. On my Razor2 I have it configured to come from the right side with the drysuit connected to the left first-stage and the wing inflator coming from the right side. I like that configuration and it is a standard feature with the Razor2 and 2.1.
The weight system is nice, but during first experiences with sidemount and drysuits I had up to 19kg of lead on my Razor2 - nearly a year before the Stealth became available. Required some creative placement then, but I routinely use up to 13kg without problems now.
The XDeep system is great, but more limited in positioning for trim and in its maximum carry capacity.
I only used the Stealth as an example. I do not actually mean to point out its flaws.
There are disadvantages to be found in any system - even the Razor 2.1 itself.
In my opinion as an non-technical diver none of them are strictly limited in any way.
With them modified for perfect fit and in pristine condition there is nothing I can think of that could not be accomplished with any of them (even out of the normal scope of my own dives).
There are several systems that imitate the Razor nearly perfectly: Agir Brook, XDeep Stealth, DirZone Diamond, DiveSystems Manta and many others essentially allow everything the Razor does (most miss the Razor-pouch, small detail easily fixed).
There are always some compromises though, mostly it is wing size and design:
To stay with the Stealth as an example it its less durable than a system made entirely out of steel plates and a few strands of webbing and also more bulky.
The extra padding also increases buoyancy minimally.
Main complaint is always the pull-dump, however.
Personally I like the ambidextrous idea, but in practice there can be situations where it will be next to impossible to reach the pull-dump at all with a fully inflated and probably dislocated wing (not a big problem with the right prior training, however).
I also dislike the fixed position of the inflator. On my Razor2 I have it configured to come from the right side with the drysuit connected to the left first-stage and the wing inflator coming from the right side. I like that configuration and it is a standard feature with the Razor2 and 2.1.
The weight system is nice, but during first experiences with sidemount and drysuits I had up to 19kg of lead on my Razor2 - nearly a year before the Stealth became available. Required some creative placement then, but I routinely use up to 13kg without problems now.
The XDeep system is great, but more limited in positioning for trim and in its maximum carry capacity.
I only used the Stealth as an example. I do not actually mean to point out its flaws.
There are disadvantages to be found in any system - even the Razor 2.1 itself.
In my opinion as an non-technical diver none of them are strictly limited in any way.
With them modified for perfect fit and in pristine condition there is nothing I can think of that could not be accomplished with any of them (even out of the normal scope of my own dives).