Tape is a wonderful thing, and as Danny teaches at Mix:Master Wyatt Academy, I also think it should go on EVERYTHING! (almost everything at least haha) Kick, Snare, Bass, Sub, Melodic instruments, etc etc etc etc etc etc It really adds a nice weight and fatness to things among many other valuable sonic characteristics. Try adding tape to each individual channel in your mixes and adjust them to taste. You won't regret it. Everybody has their preferences but for me I like to use either Softube Tape and/or Slate Tape on individual channels within my mix, and I almost always reach for the UA Ampex ATR 102 Tape in my mastering chain. Hope this helps and best of luck to you!