iView, Finder, Shoebox, Qpict

Requirements
Image managing software should not create a second copy of files. Have robust meta-data editing capabilities. Not keep your data- data this program generates should be accessible to other programs.

iView
Bad
Does not allow partial deqownloads
Does not adjust if underlying image is moved
Not allow common keyboard shortcuts such as Get Info
Company Website RSS feed is invalid
Annotation does not affect original files. But pro version 3 does have XML export.

Good
Doesn't create its own copy
Fast!

Finder
Doesn't allow the editing of meta-data of multiple files. Disqualifier.
No second copy.

Shoebox
Shoebox would be great if it weren't buggy. It allows the creation of heirarchical metadata with many preset categories. Has ability to do inverted selections. Unfortunately, no matter what filter I use I am seeing every image.
Other problems:
No RSS on site so I won't be able to tell if these problem get fixed. I added it in VersionTracker to check for updates.
Many negative reviews on VersionTracker.
Unresponsive customer support.
Pictures with no place data. (? Not sure what I meant here.)


Qpict
Keeps your data. Can't add keywords to spotlight. There is an XML export but who can import this XML?
Help is only offline.

Note:
Do apps work fine if left as a disk image? I kind of like not moving things to application folder while evaluating them.