I been using that one. It's pretty efficient. It has a picture next to the name of the item and it follows the order of how the items are displayed in the catalog. You don't need to sign up, you're given a unique user ID instead
I use moridb.com because it has pictures, and because you can generate your own catalogue lists there to fit the way you want to organize items in the game. the best general guides i've found are the walkthroughs by Liquefy at gamefaqs.com.