I'm finally starting to get on board with the whole e-reader trend after resisting for quite a while. I love real hard copy books, and that's not going to change, but the siren song of convenience is starting to become overwhelmingly tempting. I read a lot- multiple hours every day, and I already know that I will be comfortable reading books on a device because I've been using my laptop for about a quarter of my reading for the last year. Looking at comparisons of various models, however, I'm a little overwhelmed by all the details. Which one do I want?

I want the device to be fairly versatile as far as environment goes- I do a lot of reading in the dark with a sleeping SO next to me, so a lighted backscreen sounds appealing (which is how it works when I read on my computer), but the info I'm reading seems to suggest that e-readers with lit screens are going to be difficult if not impossible to read in daylight, which would definitely be a problem. Anybody have recommendations for lights specifically designed to be used with these devices? A lot of those on offer just seem like the usual clip-on "reading lights" that cast a too-small circle of dim light and constantly fall off of books. I'd want that was sturdy, reliable, and preferably semi-permanently attachable to the device itself.

As far as access to books goes, I know that Kindle has only recently started supporting library books, but when I checked out the fact sheet on Amazon it looked like I'd have to pay (.15 per MB?) to have the books "delivered" to my device. That seems like bs. Am I misreading? The majority of the books I'll be reading on this device will likely be library books or public domain books, so this is pretty important to me- I don't have a lot of disposable income for books but I do read a ton. Making notes and highlighting and such is not important to me- I'm not the kind of person who writes in books normally and I'll mostly be reading fiction. I'm currently only familiar with PDF and ePub formats for ebooks, as I do all of my current ebook reading in Adobe Digital Editions. That makes the Nook feel more appealing because it supports these formats, but I don't know if there's really a difference as far as the reading experience goes.

I'm a bit confused about the wifi vs. 3G features- obviously, if I get a wifi only version, I'll only be able to download books when I'm connected to the internet via a wifi network and otherwise I'll be able to download books from anywhere, but... the Kindle's facts sheet looks like it says that even if I have a 3G device I won't be able to use it for any web browsing other than book downloading and wikipedia unless I'm connected to a wifi network. Is that so? (The only attraction here is to look up the occasional bus schedule- I don't want a device that I can use regularly for web surfing, and I would be okay with it not being able to do this at all, but being able to use it for this purpose is the only real reason I can think of for me to pay more for 3G).

It looks like the Nook has better battery life than the Kindle (60 hours versus 30 hours without wifi turned on), but there's no way either one of them is going to last me a month at at time between charges, so I'm not that terribly concerned about it.

So...what do you guys think? Am I overlooking significant factors? I'm pretty much vacillating between a Kindle and a Nook, but that's probably because I don't have patience to wade through info about other brands. If I go with the Kindle, do I want the ad-supported version, or should I cough up the extra cash to avoid the ads? Money is certainly a factor- I don't want to be paying $200 when I could be getting all the functions I need for $80. Speak to me, oh experienced e-reading Q'landers!

p.s. I did read the other questions pertaining to this, but several new readers have come out in the time since those questions were asked and I wanted to get advice specifically tailored to my preferences.