Being a first officer here is actually OK. You get what you bid for, at least I do, you get most of your leave and you get pay raises. Very few F/Os will work more than 800 hours a year.
As a captain it seems very different. If I'm to believe my colleagues to the left you won't get what you bid for, you can forget about leave when you want it ie. summer, christmas. If you are a senior captain you have only gotten 0,5% worth of pay raise in the last two years and very few captains will have a roster with less than 92 hours in a 31 day month.
So as a first officer you'll have trouble filling either of the famous buckets. As a captain you'll fill the both buckets in a much faster pace but at the moment I believe you'll fill the dirt bucket first....