To put it simply, there's no "right" way. Wanna binge? Binge. Wanna watch one episode a day? Do that.
I can't pass judgement on the quality of specific subs or dubs tho.
That said, some episode may be quite good in terms of pace and action, while there are at least a couple of filler episodes, even though in reality there's always some development either in terms of characters or the background of the whole story. If anything, the first half of the series tend to offer more fast paced action when it comes to fights, while the second half has literal trips. Also, don't freak out if a lot of elements in the story don't get to a solution: this franchise is notorious for red herrings.
Watch the entire series, twentysix episodes, including the last two episodes, which are the trip of trips, then turn to the films, Death/Rebirth and End of Evangelion. The first is a quick retelling of the whole story plus the first part of the finale, but this time in a real world, action perspective. The second is the whole action finale.
Then, if you liked it or at least you had not actively disliked it, you can move to the more recent Rebuild films.