So I used to be naive about drop D, thinking I can go back and forth, no big deal. I'm sure many of you know this already, but I checked every string other than low E after dropping it to D, and they were all sharp. So I returned the whole thing. After returning E to E, my other strings fell flat. Now I understand why people keep a second drop D guitar close by. It really does mess with your bridge or neck, most likely bridge. Again I'm sure the pros know this, but for beginners, heads up.
That is all.