Most of the price difference is probably because of different options with regard to internet connectivity. Streaming movies form internet etc.
Btw, your middle link didn’t work for me - the other links display the “overview” of the product.
In overview, on the upper banner, click “specifications”. You’ll be presented with a list of features and specs, help you sort out the differences between these models.
I think there’s a “compare items” feature too on best buy site. I believe you’ll find that feature in the main list of the items you’re browsing - rather than after already having selected the specific model description (like you’ve done above).
There’s a little square/box you can check, then “compare items”.
can’t get them to work. let me pull them from another site
LN46C670
Warranty Terms - Parts
1 year
Warranty Terms - Labor
1 year
Product Width
44"
Product Weight
48.3 lbs. with stand (39.9 lbs. without)
TV Type
LCD Flat-Panel
Screen Size Class
46"
Screen Size (Measured Diagonally)
46"
Aspect Ratio
16:9
Vertical Resolution
1080p
Screen Refresh Rate
120Hz
Dynamic Contrast Ratio
150,000:1
Internet Connectable
Yes
DLNA
Yes
PC Inputs
1
USB Port
Yes
Media Card Slot
No
HDMI Inputs
4
DVI Inputs
0
Component Video Inputs
0
Composite Inputs
0
Speaker Output Power
20W
Speakers
2
ENERGY STAR Qualified
Yes
V-Chip
Yes
Watts/Channel
10
Simulated Surround
Yes
Instant Content
Blockbuster, Facebook, YouTube, Flickr, Twitter, CinemaNow, Hulu Plus
USB Input
Yes
Ethernet Port
No
iPod Dock
No
LN46C630K1F
Warranty Terms - Parts
1 year
Warranty Terms - Labor
1 year
Product Width
43-3/4"
Product Weight
48.1 lbs. with stand (39.7 lbs. without)
Mount Bracket/VESA Pattern
400mm x 400mm
TV Type
LCD Flat-Panel
Screen Size Class
46"
Screen Size (Measured Diagonally)
45-9/10"
Aspect Ratio
16:9
Vertical Resolution
1080p
Screen Refresh Rate
120Hz
Dynamic Contrast Ratio
120,000:1
Internet Connectable
No
PC Inputs
1
USB Port
Yes
Media Card Slot
No
HDMI Inputs
4
DVI Inputs
0
Component Video Inputs
0
Composite Inputs
0
Speaker Output Power
20W
Speakers
2
ENERGY STAR Qualified
Yes
V-Chip
Yes
Power Consumption (watts) Power On
104
Power Consumption (watts) Stand-by
0.2
Watts/Channel
10
Simulated Surround
Yes
USB Input
Yes
Ethernet Port
No
iPod Dock
No
Product Height (with stand)
28-9/10"
Product Depth (with stand)
10-7/8"
Product Depth (without stand)
3-1/4"
Product Height (without stand)
26-1/2"
LN46C550J1F
Warranty Terms - Parts
1 year limited
Warranty Terms - Labor
1 year limited
Product Width
43-7/8"
Product Weight
48.3 lbs. with stand (40.1 lbs. without)
Mount Bracket/VESA Pattern
400mm x 400mm
TV Type
LCD Flat-Panel
Screen Size Class
46"
Screen Size (Measured Diagonally)
45-9/10"
Aspect Ratio
16:9
Maximum Resolution
1920 x 1080
Vertical Resolution
1080p
Screen Refresh Rate
60Hz
Dynamic Contrast Ratio
90,000:1
Picture-In-Picture
Yes
Internet Connectable
Yes
DLNA
Yes
PC Inputs
1
USB Port
Yes
Media Card Slot
No
HDMI Inputs
4
DVI Inputs
1
S-Video Inputs
0
Component Video Inputs
2
Composite Inputs
2
RF Antenna Input
1
Audio Outputs
1
Speaker Output Power
20W
Speakers
2
Speaker Location
Front-bottom
ENERGY STAR Qualified
Yes
V-Chip
Yes
Sleep Timer
Yes
Alarm Timer
No
Antenna Included
No
Instant Content
Netflix, Pandora, Facebook, Twitter, Flickr
USB Input
Yes
Ethernet Port
Yes
iPod Dock
No
Product Height (with stand)
29"
Product Depth (with stand)
10-7/8"
Product Depth (without stand)
3-1/4"
Product Height (without stand)
26-1/2"
Here’s a spreadsheet I made with the comparisons side-by-side.
From glancing at the comaprisons:
The C670 and the C630 have 120HZ refresh rates. The C500 is 60HZ.
A high refresh rate is important on LCD sets so you get less ‘motion blur’ when watching fast moving objects. Since they now make 240HZ sets I’d consider 120HZ the standard. 60HZ is more a budget set.
The three also have various contrast ratios. While this doesn’t mean much comparing brand to brand since there is no set industry standard it does mean something when comparing within a brand. It measures the light to dark variance. The C670 is the best at 150K:1, the C630 at 120K:1, and the C550 the worst at 90K:1.