Hi.
That's a great first post and you're doing the right thing by asking questions BEFORE you buy anything. I have limited experience with a variety of speakers, but I do own a pair of
SVS Ultra Bookshelf Speakers that might fit the bill for what you're describing. They're pretty neutral and articulate, and they dig pretty deep for a bookshelf speaker. They sound great and for your style and room size, they might just do the trick.
There are plenty more options out there though and with your budget you'll get a bunch of good suggestions. I'm still doing my own homework on amplifiers and avr's so I'll let the more experienced folks guide you on that. Welcome to Audioholics!