The problem with buying mulch this time of year that that most places are out of it because it's winter. I used to use cypress all the time, it's great stuff especially in the winter when humidity is low because it holds water well. But it really is nearly impossible to find the good stuff this time of year. I used to lay in a supply in the summer when I could get a lot of it for cheap and then just store it in the garage for when I needed it. These days I mainly use newspaper. The floor of the herp room is a lot cleaner, but the tubs dry out pretty quick and I need to spray them down.
My wife ordered something for one of her gardens that I used once, it's called Mulch Brick and is chopped coconut coir. Seemed to work really well. It's not the fine milled stuff but comes in larger chunks. It's expensive but it expands and a bag can fill quite a few tubs.
http://www.gardeners.com/Mulches/Veg...efault,sc.html