New to Home Theater. Need help with connections.

[Dante Rising]

I'm new to the home theater arena, and could really use some help assuring that I get my connections correct the first time. I have the following hardware, and would greatly appreciate advice on how to connect everything:

1 Onkyo TX-SR508 receiver
1 Panasonic 50PZ800U plasma TV (4 HDMI (3R/1F),analog audio inputs, PC video/audio inputs, digital audio, analog audio outputs)
1 Sony Playstation 3 (HDMI)
1 Xbox 360 (HDMI)
1 Panasonic BR player (HDMI)
1 pair of Klipsch XF-48 floorstanding speakers (internal self-powered amplifier, Line-level RCA jack or high-level speaker binding posts)

Is it better to use the line level connection, or the high level speaker binding posts as the connection of choice for the Klipsch speakers?)

Thank you!