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 gives accurate results for water + HC,
however Prode includes also ISO 18453 (specific for natural gas + water), GERG 2008, Peng Robinson with cpomplex mixing rules such as Wong Sandler, CPA two versions including association etc. etc.
which is the best option ?

[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.