Just out of curiousity, what are the features that sell Final Draft for you? I've used CeltX for a while now and haven't reall 'hit a wall' in terms of things that I want to do but can't. What would I be getting extra with Final Draft?
Cheers.
It helps increase your workflow speed, in a big way!
It's the very small things that make a difference, take transitions as an example, in Celtx you select the transition tab and type in "FADE IN" or whatever. In Final Draft, there are two ways, keep pressing tab (or the transition tab) till your at the right side of the script and type the first letter of the transition and the list of the industry standard transitions come up with ease.
Another thing, making a character's dialogue a voice over. Correct me if I'm wrong here though, but with Celtx you basically have to type it in next to the characters name. With Final Draft, add a bracket "(" and the list of smart types include voice overs, subtitles. You can even add your own to the list.
The fact that in Final Draft, I can assign different voice to my characters and have the computer read it to me in the different voices gives me an idea of how it might sound or flow.
It's the customizability and also the fact it removes the boundary on spending time on useless time wasting techniques when you can spend time on what's really important, the story.
The revision mode is a life saver especially if someone else is inputting their own ideas.
With Celtx you have Celtx Studio if you'd like to collaborate with another write but it's $4.99 a month, the same feature is included in Final Draft for free (considering you have to pay for the software)
Just use it for one day and you'll understand how far behind Celtx is. I've been an avid Celtx user for about 1.5 years, though I was converted to Final Draft the first day I used it and scornfully look at Celtx every chance i get.
Seriously, there are much more features. The ones i listed were the small ones but were big enough for me.
But in saying that, I'd recommend Celtx to any body starting out rather than using 'Word'. It's very much like comparing Sony Vegas to FCP or Avid Media Composer.