Which RAM is better?

Kingston HyperX Series 184 Pin 512MB DDR PC-3700
Specification
Manufacturer: Kingston
Speed: DDR466(PC3700)
Type: 184 Pin DDR SDRAM
Error Checking: Non-ECC
Registered/Unbuffered: Unbuffered
Cas Latency: 3-4-4-8-1T
Support Voltage: 2.6V
Bandwidth: 3.7GB/s
Organization: 64M x 64 -Bit
$116.00



or

Kingston HyperX Series 184 Pin 512MB DDR PC-3500
Specification
Manufacturer: Kingston
Speed: DDR433(PC3500)
Type: 184 Pin DDR SDRAM
Error Checking: Non-ECC
Registered/Unbuffered: Unbuffered
Cas Latency: 2-3-3-7-1T
Support Voltage: 2.6V
Bandwidth: 3.5GB/s
Organization: 64M x 64 -Bit
$118.00


Which one of these is better overall and better for OC'ing?

I thought that the 3700 would be better but the CAS timings are higher? I thought it was better for them to be lower? But, which one of these is best for OC'ing?

Neither are ideal. Both are over-costy memoy with inferior chips. Kingston Hyper-X PC3200 (w/o an A in the product code; ex. KHX3200K2/1G instead of KHX3200AK2/1G) or Kingston Hyper-X PC3000 should offer better memory chips (BH-5) then found in Hyper-X PC3500 (CH-5) or Hyper-X PC3700 (Samsung?).