It may be useful to think about the
type of reticle and adjustments, plus amount of internal adjustment.
Looking at scopes in the 6-24 power range:
With 2FP scopes Hensoldt (military Zeiss), Zeiss, Nightforce and Swarovski are all at or near the top of the tree. Hernsoldt has 34mm tube a good amount of internal adjustemt and excellent glass but warranty is only for 2 years - it is intended to cover two years of hard military use.
The VMV Zeiss has excellent glass, the mildot reticle has a little 12x reminder at the top of it to remind you to set the scope at 12x for the mildot scale to be correct (24x would give you 1/2 mils and 6x 2mils).
Nightforce NXS 5.5-22x56 or 5.5-22x50, built like a tank, good optics, good value, lots of up adjustment, the illumination adjustment is crap on the NXS IMO. Swarovski (PVS 6-24x50)- I would check how much adjustment (up) it has I think not a lot but the TDS reticle might be a bonus but no lit reticle.
If you are going to "click" it is good to have a reticle and click values the same. Eg mildot reticle is easier to use with cm clicks (milrad) adjustments or if you want 1/4 MOA clicks go with a MOA type reticle - Nightforce have a good selection of reticles and both MOA and milrad adjustment options.
FFP scopes, in the quality you are talking S&B or USO. With USO I have only really used fixed power ones - have played with a couple of SN3`s so hard top comment other than big and heavy.
S&B I would forget the Precision Hunter 4-16x50 - not much adjustment and go for the PMII scopes - 34mm tubes. I really liked my 4-16x50 PMII and love my 5-25x56 PMII. The 5-25x56 is also big and heavy, on a hunting rifle I would have a look at the 4-16x50 PMII and 4-16x42 PMII (lit reticle). You can get them with 1/4 MOA adjustments or cm (milrad). The P3 and P4 reticles are mil based though. Speak to Pete Lincoln about S&B
Plenty has been written on the pros and cons.
One thought are you set on 6x-24x magnification range?
David.