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Mark UK hit the nail on the head. But I think the data re. the ATX not being left / right compatible is incorrect.MarkUK:Both excellent regs I own three ATX200s and have tested the XTX200.
Performance-wise, no real difference.
The ATX200 second stages can only be used standard (i.e. coming over your right shoulder), whereas the second stages on the XTX200 can be swapped by an Apeks tech so they come over your left shoulder (some techies prefer this set-up on a twinset).
Also, the ATX200 second stages have small exhaust Ts, whereas on the XTX200 second stages, you can swap between the small exhaust and a larger one (much like those on the old TX series).
Also, on the XTX200 first stage, Apeks have ditched the larger-sized primary port from the ATX200 first stage and made them all standard-size. Handy if you are anywhere remote and your hose goes on the frizz, as trying to find one of those Apeks hoses is a bloody nightmare (ask me, I know...).
Mark
Captain12Pk:Mark UK hit the nail on the head. But I think the data re. the ATX not being left / right compatible is incorrect.