I can realize comfortable life with EagleFiler in almost 2 and half month and have built database with 2900 items (2.9GB). This database is handled via 10 parent tags with 100 child tags.
When expanding all tags in Source List window, closing library and reopening library again, I noticed that scroll action in Source List window has a slight friction, that is, scrolling seems to scratch for an instant (in a split second).
To avoid this, I keep in mind to collapse all tags to TAGS now.
Perhaps, this may be for my environment only (early 2008 iMac : OSX 10.5.8, Core 2 Duo 2.66 GHz).
However, my database is increased day by day, and so I appreciate to get any advice about this.