How do I choose which module to use when there are several options for the same functionality? It's not at all uncommon to find multiple modules that provide basically the same functionality. For instance, there are many SPAM control modules that offer extremely similar functionality (e.g., Spamicide and Hidden CAPTCHA). And there are lots of Taxonomy modules that do similar things. So when multiple modules meet my requirements, how should I choose which one to use?
Personally I do a few basic checks before digging deeper.


How many reported installs? (about the same in your example modules).
How long since last update to module? (Spamicide is 5 days ago (from today))
How many open issues?
Who is the developer? (Have they worked on other modules that I use, etc).


Then you can start digging into integration, if I where looking for an inline image management tool I personally would choose something that takes advantage of other modules instead of rolling it's own solutions, something that is features exportable, etc.