The friends I practice with play in drop D alot. I have always played in standard tune but have no probs in drop D. What is a pain is tuning down, then later tuning up, then later tuning down.... My Foundation 5 string doesn't get much use. I like it and adjusted to the extra string in no time but I am at heart primarily a 4 string player. Now, I know there are different ways to tune a 5er. Mine is BEADG but I was thinking of making it DEADG so when we arent playing in drop D I can just ignore that string. But then I realized that with DEADG I won't have the ease of (the low D and A side by side) DADG with a 4 string . So then I was thinking DADGC. Does it really matter /how/ I have the tuning on my 5string for the group I practice with as long as it works?