I need some help in picking a good A/V receiver to pair up with my Polk Audio speakers.

I recently bought the following Polk Audio speakers :
Front Channels : pair of R50 towers
Center Channel : CSi3
Rear Channels : pair of R30 towers
Surround Speakers : pair of R15 bookshelfs
Subwoofer : None(looking for a good deal)

I am interested in a receiver that is good for both movies and music. These are my initial choices(but am open to other suggestions as well) :

1. Pioneer VSX-1014 ~$400
2. Onkyo TX-NR801 ~$700
3. Yamaha RX-V2500 ~$700

I am leaning towards the Pioneer due to the price difference(so that I can buy a graphic equalizer with the difference). But I frankly do not know how Pioneer receivers match with Polk Audio speakers.

I really appreciate the help/advice you guys can provide.