Getting what you can have serviced by your LDS is very important because if you had a problem with your setup before the big trip sending your regulators away to get serviced is no fun.
I can not speak much for the Oceanic's version on DVT but as far as Aqualung's goes its a great success and not a gimmick. I work in the the caribbean and put ALOT of abuse on my Legend ACD and it has never let me down. I dont use a dust cap and I will throw the whole setup in to rinse tanks or leave it in mesh bags on a wet boat decks and the ACD does exactly what it is supposed to do, it keeps the water out of the first stage. I recently did the servicing on the first stage as well and still to this day the inner parts of the regulator look as if they are brand new not even a hint of corrosion on the filter.
Look into the Legend series or Titan series ACD regulators. Both series have balanced first stages and you can get them with balanced second stages.
One thing I will say that you must do with these ACD or DVT regs is make sure the area is free of water before you attach it to a new tank, otherwise you will be blowing drops directly into the first stage. A quick shot of air from the cylinder to the valve seat before you attach the regulator will solve this problem.
I can not speak much for the Oceanic's version on DVT but as far as Aqualung's goes its a great success and not a gimmick. I work in the the caribbean and put ALOT of abuse on my Legend ACD and it has never let me down. I dont use a dust cap and I will throw the whole setup in to rinse tanks or leave it in mesh bags on a wet boat decks and the ACD does exactly what it is supposed to do, it keeps the water out of the first stage. I recently did the servicing on the first stage as well and still to this day the inner parts of the regulator look as if they are brand new not even a hint of corrosion on the filter.
Look into the Legend series or Titan series ACD regulators. Both series have balanced first stages and you can get them with balanced second stages.
One thing I will say that you must do with these ACD or DVT regs is make sure the area is free of water before you attach it to a new tank, otherwise you will be blowing drops directly into the first stage. A quick shot of air from the cylinder to the valve seat before you attach the regulator will solve this problem.