Home Theater Noob Pairing New Speakers with AVR

Hey guys, I am back with more questions! I really appreciate all the help you guys gave me in my other thread. Now, I have a specific question about what receiver I should buy.

Basically, I have some speakers I really want to buy but it seems like I may damage them with the current receiver I have.

Speakers I want:

RC-52 II (Center Channel)
http://www.klipsch.com/rc-52-ii-center-speaker

RB-51 II (Bookshelf Pair)
http://www.klipsch.com/rb-51-ii-bookshelf-speakers-pair

RS-42 II (Surround)
http://www.klipsch.com/rs-42-ii-surround-speaker

I already have a decent sub from Polk, the PSW110. Could it be better? Sure. But that sub is WAAAAY better than the rest of the speakers in my current setup so I will upgrade that last.

So, my dilemma is this: My current receiver is just not going to cut it I don't think. I have a Yamaha RX-V373. What does my budget for a receiver to pair with these speakers need to be? What are some recommended brands or favorite models? I would love to not have to spend $1500 but if I have to, I will.