Need help narrowing down my scope search.

[Fire306]

I am currently building a custom long range rig based off a Sako TRG-s m995 Action. It is currently getting a Kreiger SS Barrel installed #6 contour, and is being chambered in 7mm STW. I have a Whiskey 3 Chassis from Kinetic research ordered for it.
I would like to work my way out to shooting 1000 yards, possibly further.

I am trying to decide on what optics to put on it. I have several Leupold scopes now, and don't have a complaint about any of them. So naturally, I am looking at Leupolds, but I have also long wanted to try a Nightforce NSX.

I have somewhat narrowed my search down to a Leupold Mark 4 ER/T 6.5-20x50 30mm tube TMR Reticle in either the M1 or M5. (Could use some info on the difference between the M1 and M5) Or, the Nightforce option would be a Nightforce NSX 5.5-22x50 with the NP-R1 or MOAR reticle.

Looking for any info anyone has one either model, reviews would be great. The Leupold is Front Focal Plain, the Nightforce is not. I understand how FFP is important if using the reticle for ranging known sized targets, just not sure how important that is to me.

Thanks in advance

 

[ICANHITHIMMAN]

The difference between the M1 and the M5 is the FFP vs SFP that you already mentioned, in addition the M5 is graduated in mil/mil 0.1 or 1/10 mil increments. I have an M5 for sale in the EE now, I have owned 4 different Mk4 series optics and the M5 if my favorite. I have completely switched to FFP optics. I have taken quite well to the Horus system so I am getting rid of all my other scopes.

 

[sp6x6]

Also to add to last post,turret matches mil reticle get m5,his scope is great scope and good deal.