Some people will say that October is better because it is the "start" of "train season" when the weather gets bad for much of the country. It also leads up to the holidays when trains are more on the brain for a lot of folks.
But since you indicate you've been going consistently to both and are considerring cutting one out, what do you think? Your observations based on your trips are more important in your decision than what others may declare the proper answer based on their interests.
-Dave