well since I've started working full time ... I've worked 4x10s, 5x8s and 7x11s (with 7 on 7 off) and my favorite is definatly 4x10s.
with 4x10s, picking up an extra shift for some overtime would still leave you with 2 days off. (I miss my overtime, but I'm salary now, so I don't get it). I also love the three day weekends.
the 7on 7off was great (I worked that shift for about a year (where I work, all of the overnight/graveyard shifts are 7 on 7 off. The 80 hour work weeks kinda sucked, as did being at work from 6pm to 5:30AM ... however, the week off was great for overtime. and for travel.
I don't mind 5x8 hour days since the days tend to go by so quickly and sometimes ... if you want overtime ... some workplaces will let you tack on an extra hour or two to the end of your shift if theres tons of work to do.
EDIT ... currently with my 4 x 10s I work every Sunday,Monday,Tuesday,Wednesday.
I wouldn't care for it if the days off were not all in a row. I also don't like to work on Saturdays. I love having Fridays off, and don't mind working on Sundays.