Natural gas, water dew point with Prode, best model ?

[Crob]

Prode Properties includes several thermodynamic models which allow to calculate water phase condensation in natural gas,
I have found that Soave Redlich Kwong or Peng Robinson with temperature dependent BIPs are good for water + HC,
however Prode includes also ISO 18453 (specific for natural gas + water), GERG 2008, Peng Robinson with complex mixing rules such as Wong Sandler, CPA (two versions including association) etc. etc.
which is the best option ?
Do GERG, CPA or other complex models offer advantages ?

[cbadia]

For natural gas Peng Robinson with temperature dependent parameters is accurate,
if your mixture includes polar non-hydrocarbons alternatives could be CPA or a EOS
based on complex rules,
for best accuracy consider data regression utility !
Prode Properties includes many thermodynamic models
which allow to solve multi phase vapor-liquid-solid equilibria,
it is difficult to suggest a model without knowing exact composition.

[cstaff]

may be it's a bit late but I agree with cbadia,
the model in Prode Properties (as well as other simulators) should be selected keeping in account the different components in your mixture,
if you have more than one polar component (water etc.) CPA could offer some advantages but other options are available as suggested by cbadia.