From a memory and hand position standpoint chords that have a black key in the middle (D maj. E maj. etc) are the easiest.
Disagree. You can move around the chords on the white keys without changing your hand shape and everything will sound harmonically related and therefore in key, plus it's easier to count on the white keys. I've been playing music as an adult for 15 years (and had 5 or 6 years of piano lessons as a kid), I know a great deal of music theory and am familiar with a wide variety of scales, modes, and alternate tuning systems, and I still find it easier to move around on the white keys. I happen to particularly like the Phrygian mode, but tend to just play things in E Major when I'm trying out ideas and then transpose afterwards, because as long as I'm playing on the white keys and remember what the root is I literally can't hit a wrong note.
Some people just stick with the original key that lets them play this way; music teachers refer it as 'white note fever.'
Disagree. You can move around the chords on the white keys without changing your hand shape and everything will sound harmonically related and therefore in key, plus it's easier to count on the white keys. I've been playing music as an adult for 15 years (and had 5 or 6 years of piano lessons as a kid), I know a great deal of music theory and am familiar with a wide variety of scales, modes, and alternate tuning systems, and I still find it easier to move around on the white keys. I happen to particularly like the Phrygian mode, but tend to just play things in E Major when I'm trying out ideas and then transpose afterwards, because as long as I'm playing on the white keys and remember what the root is I literally can't hit a wrong note.
Some people just stick with the original key that lets them play this way; music teachers refer it as 'white note fever.'