Like a few others, I plant taller ones to the rear, shorter in front (it only makes sense). As for spacing, about a foot apart. When I have tried to "squeeze in just one more", I haven't been happy with the crowding or trying to keep them tied to the stakes.
This is the first year ever that I've thrown color caution to the wind regarding color. Considering those with the wrong name, it became a headache not a pleasure. We'll see what happens.
Like Sulli I'm more relaxed and less anxious. Combinations like Labyrinth and Pineland's Pam definitely are not a match made in heaven so this year Labyrinth has the tuteur all to itself.