I would never spend $1000 (let alone 4) on anything Bose. I've not heard much, tbh, but what I have heard was enough to take Bose off my shopping list permanently. What they do well is marketing, not manufacturing, imo. You seem to have a healthy budget range. Keep an eye on the replies. you'll get some good suggestions.
I'm partial to SVS' ultra line of speakers.
This package would be an excellent choice, though I used all bookshelf speakers for surrounds and a center channel which not only matched up better, it saved me a few hundred dollars. This will also leave you with money left over for a sub or 2.
This package is more pricey, but includes towers. I have this system (with towers) and if I'm to be honest they aren't a giant leap in quality over the bookshelf speakers if you have a pair of subs. I bought them to help justify me buying a new amplifier, lol. Like I said earlier, I use all bookshelf speakers instead of their center and surrounds and saved a few hundred.
Worthy of note is the fact that neither package comes with a subwoofer. the bookshelf system would leave plenty left over for that. I guarantee you these systems will stomp all over Bose.
*Edit: I just realized I didn't figure in a receiver...