I'm using the NEO2 Layout.
I don't like the double space. Instead of the left space, i would use shift. Also i would not use dedicated arrow keys, imho waste of space.
Here you can see my layout for a planck:
[_NEO] = {
{KC_ESC, KC_X, KC_V, KC_L, KC_C, KC_W, KC_K, KC_H, KC_G, KC_F, KC_Q, KC_BSPC},
{KC_TAB, KC_U, KC_I, KC_A, KC_E, KC_O, KC_S, KC_N, KC_R, KC_T, KC_D, KC_Z},
{KC_LSFT, KC_LBRC, KC_SCLN, KC_QUOT, KC_P, KC_Y, KC_B, KC_M, KC_COMM, KC_DOT, KC_J, KC_ENT },
{F(0), XXXXXXX, KC_LGUI, KC_LALT, KC_LSFT, KC_SPC, KC_SPC, NEOMOD4, NEOMOD3, BACKLIT, AUDIO, RAISE}
}
[_NEOMOD3] = {
{_______, XXXXXXX, LSFT(KC_SLSH), RALT(KC_8), RALT(KC_9), KC_GRV, KC_EXLM, KC_NUBS, LSFT(KC_NUBS), LSFT(KC_0), LSFT(KC_6), _______},
{_______, RALT(KC_MINS), LSFT(KC_7), RALT(KC_7), RALT(KC_0), LSFT(KC_RBRC), LSFT(KC_MINS), LSFT(KC_8), LSFT(KC_9), KC_SLSH, LSFT(KC_DOT), RALT(KC_Q)},
{_______, KC_NUHS, LSFT(KC_4), RALT(KC_NUBS), RALT(KC_RBRC), LSFT(KC_EQL), KC_RBRC, LSFT(KC_5), LSFT(KC_2), LSFT(KC_NUHS), LSFT(KC_COMM), _______},
{_______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______}
}
[_NEOMOD4] = {
{_______, KC_PGUP, KC_BSPC, KC_UP, KC_DEL, KC_PGDN, XXXXXXX, KC_7, KC_8, KC_9, XXXXXXX, _______},
{_______, KC_HOME, KC_LEFT, KC_DOWN, KC_RGHT, KC_END, XXXXXXX, KC_4, KC_5, KC_6, XXXXXXX, XXXXXXX},
{_______, XXXXXXX, KC_END, KC_INS, KC_ENT, KC_WBAK, XXXXXXX, KC_1, KC_2, KC_3, XXXXXXX, _______},
{_______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______, _______}
}