I don’t often connect to the E from my home line of the 6 because of the two-block underground connection and the super-deep level of the E at that point. That can be hell when it’s hot, especially when the E’s escalators are broken, which seems to be a 50-50 shot on any given day. (When built, they were the longest escalators in the world.) Climbing eight stories in 100+ degree heat makes one not so fresh for the rest of the day.
TRIVIA: Built in 1911 at 180 feet deep (about 18 stories), the 191st Street station for the 1 train is the deepest in NYC’s system.