recording with Line 6 POD XT USB

when im choosing my input signal > POD XT  in track view in sonar, i get 3 choices of either left, right or Stereo. should i be using the stereo option? since im using the POD, which is stereo I believe. or does it not matter? wasn't real sure

I nearly always record the stereo outputs of my Pod.
 
This keeps all options open. If when mixing you decide a track should really be mono, either bounce to mono or insert Channel Tools and narrow it there

I like the POD X3 (also discontinued) over the XT.  I have an XT that I used until the X3's came out.  The X3's are what the XT should have been to start with.  I like the X3 so much I bought a NOS X3 on e-bay so I would have a backup.  I keep the second X3 in my studio.   
 
There is also a later HD model.  I tried an HD and sent it back.  Its not compatible with the XT/X3 "Tones" (what Line 6 calls programs) and I found the effects were not as good as the XT/X3's and sort of "sterile".
 
Live, with my Pedal Steel Guitar, I only use the POD X3 for effects only (e.g. delay/reverb, chorus, phase, distortion).  I have one Tone that I have set up for recording direct (analog to my Studio-Capture).  I also have a couple Tones that I use with a Tele and LP for recording.