I have a XTR II 3/15 and love it! I would say very close to my Nightforce scopes!
No time on the 1/8 but for 223 bolt guns I like 2.5/10 glass
I have the XTR II 1-8x FFP ballistic circle version sitting waiting for my Modern Sporter receivers.
Won't be able to tell how much I like it until I have it mounted and try it out on the range, but first impressions just looking through it holding in my hand - the glass is great and I love how good and bright the illuminated circle looks at the lower 1x-ish range.
Just put a Steiner P4xi 4-16x56 on my ssg 3000 with a near alphamount. Scope seems quite nice, need to get some range time with it. Reticle in it seems good, SCR ret.
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Only difference between Canadian, Australian and American models is the Canadian and Australian have tactical lasered on the ocular above p4xi. Doug from cameraland answered that for me.
I picked mine up from Calgary Shooting Center, it's on their website.