The reason for a stainless cut-out or "dog bone" plate is to give stainless steal durability to a plate that weighs no more than an aluminum plate. Some people have had trouble with al plates using heavy doubles. It is also more compact for travel.
I don't think so (in xDeep's case).
xDeep stainless steel NX backplate (despite cut-outs) is 3,1 kg. For the reference, Halcyon Standard SS backplate is 2,7 kg.
xDeep also has an aluminium BP, about 1 kg.
They somewhere claimed that the reason for the cut outs in their stainless steel backplate is weight distribution, but that is probably BS as they have the exact same design in their Al version too. Cut outs are just for looks.
The stainless steel backplate is a good one. It is more stable and comfortable than a standard bp (I have the Halcyon and a generic one too). It has MORE weight than your typical standard SS backplate and the centre of gravity is located (maybe partly due to cut outs) correctly in the mid-lower back area.
and was wondering how the ZEN rates..
Pros and cons . I will be using steel low pressue Tanks and dry suit since im Located in New Jersey
Pros:
- The backplate is good and comfortable, it is wider, more stable and heavier than a standard SS backplate. All pros for a single steel tank drysuit rig.
- The Zen wing design is streamlined for the lift it provides. 19 kg/ 40 lbs lift is the same as H Eclipse. That is typically considered adequate for steel tank diving.
- Harness routing and especially the crotch strap are slightly different from standard. It works. I like the crotch strap. This may be a pro or con. If you have a lot of DIR crowd around you they may freak out, usually before trying the rig.
- Overall quality is high
- Zen is part of a modular system and if you switch to doubles, just get a Project wing (or any other doubles wing, the bolt hole spacing is standard)
Cons:
-Argon bottle rigging looks awkward because the backplate is so wide. Underwater it is just fine.
-Harness may be a con or a pro, probably more for others than yourself.
-I am not fully convinced of xDeeps aftersales service. Haven't had any issues, but they are not one of the companies praised for exceptional customer service.
- for GUE training it is probably easier to buy/borrow Halcyon
The Zen is my go to rig for single tank diving, but honestly differences are really small and you will be fine with any bp/w rig you buy.