Dahua nvr's difference

[Amjad94]

hi
Just question in mind, which is the better Dahua nvr (NVR4104HS-4KS2/L or NVR2104HS-i2)?
And the playback resolution for each of them?
Links of the devices!
Thanks in advance

NVR2104HS-I2 - Dahua International

NVR2104HS-I2

www.dahuasecurity.com

NVR4104HS-4KS2/L - Dahua International

NVR4104HS-4KS2/L

www.dahuasecurity.com