Its the one that the floor plan works for you, and also the one you went and looked at on the dealers lot going over it with a fine tooth comb.
Even if the dealer has 5 of the same on the lot, and forum member X and Y have the same model and think they are fine, there is a good chance that out of the 5 on the lot they are all not the same from a build quality / fit and finish standpoint. Its also possible that people posting on forums have issues and don't even know they have them, or are just blind to them out of pride or some other reason.