New M107 owner wanting some scope guidance...

[1971Chevelle]

I know that everyone says to get a scope from Nightforce, but money got a lot tighter this year.  So, I am looking at some other options.  The manufacturers of the scopes I am looking at all say that they will work fine on a Barrett.  So, these are the options:

https://www.bhphotovideo.com/c/product/1718882-REG/steiner_5124_5_30x56_t6xi_riflescope_msr2.html

https://www.bhphotovideo.com/c/product/1685737-REG/vortex_rzr_63601_6_36x56_razor_hd_gen.html

https://www.bhphotovideo.com/c/product/1390117-REG/athlon_optics_212100b_4_5_30x56_ares_etr_side.html

As far as a mount goes, it seems that LaRue may have discontinued the LT107.  So, I am looking at a couple of others.  

https://www.bhphotovideo.com/c/product/1781812-REG/mak_53500_34218_makpromont_for_picatinny_rails.html

https://www.bhphotovideo.com/c/product/1918554-REG/dloc_precision_dloc_c134_1530_t_cantilever_quick_detach_scope_mount.html

DLOC replied to me and said that their mount will work fine on a Barrett.  MAK has not responded yet (they are in Germany).  I see that a lot
of people recommend the mounts from Spuhr.  What is the difference between the regular and the cantilever one?  I can get the cantilever one
in FDE, but it is $85 more.  Let me know what you think. Your input will be greatly appreciated.  Thanks in advance.

[StrangeRanger]

I have a (Gen 1) Vortex Viper PST 6-24x50 FFP with the EBR-2C (MOA) reticle on my Barrett M99.

Great scope zero problems.  (Also available with a MIL reticle but I've been thinking and shooting in MOA for 50 years, too late to change)

Go with the Barrett Zero-Gap rings and use their torque specs nor Vortex's