I use a combination of both Flixster and QueueMan. Here's my breakdown:
QueueMan:
- It's definitely faster at loading the queue than Flixster is.
- It does allow you to search the Netflix catalog.
- In order to re-arrange the queue, you need to long press, then choose move to top/bottom/up/down.
- Can rate movies just like on the Netflix site (however, these don't get pushed to Facebook like it does on the site, nor can you write a review...features I use)
- Shows recommendations.
- No new releases list
Flixster
- A bit slower at loading the queue than QueueMan is (not much, but noticeable to me)
- You can "drag and drop" the titles, which beats out QueueMan since you can easily move a title up or down 2 or 3 slots: In QueueMan you'd have to long-press 2 or 3 times to do that.
- Has ability to view the new and upcoming DVD releases, current and upcoming box office movies, and allows you to add them to your queue. QueueMan has nothing to let you know what's new or what's coming out.
Neither will allow you to view multiple profiles: I'm on the 3 at a time plan, but have 2 profiles set up: I get 2 discs from my profile, and 1 from my wife's. Both Flixster and QueueMan only show discs from my (the primary) profile.
Outside of Netflix, Flixster offers a lot, such as reviews, trailers, cast lists, showtimes, buy tickets, etc.
All-in-all, Flixster offers a LOT more functionality, but is lacking the ability for Netflix recommendations, catalog search, and rating movies (you can rate movies, but they are "Flixster ratings" and not tied to the Netflix ratings).
So really, I tend to use Flixster for everything, unless I need to search the actual catalog, in which case I use QueueMan.
Hope that helps breaks down the differences.