Hi Paula
I've worked loads of different shifts over the years. Easilly my favourite was nights (no hassle off management!), the worst was working the 3 shift pattern..week of mornings, week of afternoons and a week of nights. Could never get used to those and always felt exhausted. I'm now on 12 hour continental shifts, nights and days. I love it..so much free time as your 12 shifts are over 3 weeks and you get a week off every 3 weeks. It's not for everyone though as it takes a bit of getting used to, especially remembering what shifts you are on. As long as you have a rota for the year ahead then it's ok.
Hope that helps
Nick