Get it right now!
It's going to be the best investment of your life, if you consider reading a desirable habit and you abhor reading on backlit screens.
After I got my kindle touch, I've read over 6 books in less than a month's time - I've never read more than 3 a year.
Additionally, I'd recommend that you choose either of the three after careful deliberation:
1) Kindle touch, 3G
Touch screen navigation - which is good.
Touch dictionary - which is awesome
No landscape orientation option - required for better viewing of pdfs
Limited free 3G coverage globally - Amazaon and Wikipedia are the only accessible sites
2) Kindle keyboard, 3G
I don't own it, but it has landscape orientation option as well as free 3G access to all sites though it lacks touchscreen navigation
3) Kindle DX
I don't own it, but it has a bigger screen with comes at a price.
Once you get it, you can have Calibre as your ebook management software, and explore the web - forums like mobileread, mobilism - to enhance your kindle experience.
Best of luck. Vikram
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