Having tried all three out, I can most definitely vouch for one. Which one? If I told you now, it would spoil the rest :p
- Fairly straight forward publication process
- Easy to order
- Customers can buy directly from Lulu via your own "store"
- Poor quality (very - from personal experience)
- Slightly low on the royalties
- Some products have an "amateurish" feel and look about them