You can't go wrong with the either the Denon or Pioneer - as was mentioned, if you plan on zoning more than one set of speakers, the 7.2 is a nice option. That wasn't available when I purchased my Denon. With either of these receivers, take your time to plan out your system. There are many options available in the sub menu's that are not always turned on by default. I actually have several playback modes based upon the speaker sampling I did in the room.
On the Denon, I run my outside speakers on the channel B, so I don't use up the other amps needed for the true surround sound 7.1. It has a mode that allows you to run both A&B channels at the same time. If you want to add speakers to a bedroom also, Monster makes a nice speaker selector, which will keep the appropriate impedance to the amplifier, and let you run multi room speakers off the B channel, again without taking over the zone 2/3 amps used for the full surround sound. It does affect the volume level as you turn on multiple rooms, but keeps the appropriate load on the RX, the most important thing.
When you can, dump the Bose. Unless you have the old reflection speakers from the 70's, they are mass produced, mass marketed. Klipsch, Boston Acoustics, and Polk make some real good speakers in their higher lines without breaking the bank. I am a bit old school, and have large speakers throughout my den. Standing floor up front (Polk LSiM series), with a large center channel (Polk LSiM Series), and 4 more dual fire speakers for my surround (Polk LSi series). I have waterproof BA's outside, and they take a beating with rain, and sun in TX.
Don't skimp on the cabling - run the monster speaker wire (they sell it on a roll, twisted with a circular sheathing to make it easy for attic/wall drops), monster HDMI cables between all devices. Enable the wi-fi, or run ethernet connections to the TV/Blue Ray so the software updates are easy. You can also access all their other services if you don't mind working through the cumbersome menu's.
I agree again with the TV selection of Samsung - they have left everyone else in the dust. 3D is on it's way out, a huge flop, but you can get some great deals on the sets. Samsung has a new OLED coming out this fall, that will be affordable in a couple of years if you can wait. If not, their current LED's are great. They also have an incredible warranty. When I had problems with my first samsung LCD, it was deemed unrepairable. For the cost of shipping, they upgraded me from a 52" to a 55"LED as part of their white glove customer satisfaction. It's worth the extended warranty for the reason alone.
The Samsung blue ray player is a great deal also. The great thing about all these components, is that if you have them run together with HDMI cables, they are essentially bus connected, and you can control different features of all devices from one remote. I have my system set up that if I turn off any of the TV, Blueray, or Receiver, all the other devices shut down or turn on at the same time.
If I had a bank roll, I would be talking about some other equipment, but everything mentioned by the forum members are solid suggestions. Enough to stretch the bank account a bit, but not put you into the poor house and keep you from upgrading your ride more.