5/2/5/4
Oddly, and I seriously dislike earlies, I have found the pattern most tiring during lates. 5 earlies tend to be shorter days. But 5 11-hour lates (min rest, 100 hour months) can cause me to get that blurred, jaded, don't care feeling on my fourth or fifth late.
Still prefer it to 6/3 though, and I don't mind losing one block of leave and having it spread around the year. We still do the same amount of work (900 hours) whatever pattern and 5254 does stop shift change mid-week.
I would just like someone, somewhere to say "thanks" sometime, especially after a 2.5 hours into discretion, or a ridiculous (but just legal) roster change. Would make all the difference.