There are times I wish my scopes were FFP but I am still buying SFP because (a) when hunting I hate having that big ball of twine in the middle of my picture when I am using my scope to search for game at low power, and (b) if target shooting I am usually shooting at max power where my reticle is synched to my turrets anyway, or if mirage or something I can dial to half of max power and keep in mind that my reticle marks subtend DOUBLE what they say. I know some people just can't stand the "half/double" deal but I hate the ball of twine worse.
A lot of people are PERFECTLY happy with 3-15 for what you are talking about. However, for just one ounce more (than a 3-15x50 NXS) and a couple of hundred dollars (usually, talking "used" here) I can have a 5.5-22x50 NXS. The additional power is much appreciated when shooting at long range (600 - 1,000 yds). (Not that 15 doesn't work just fine!)
I have done side-by-side comparisons of NXS's to comparably priced Leupolds a few times and the Leup's have not been quite as sharp in clarity (even after adjusting the ocular) UNLESS you get into Leupold's HD glass, which is better than NXS (comparable to ATACR glass) but costs a lot.
The glass in SHV's is indeed the same as in NXS's -- the SHV's are just not quite as rugged. You pays your money and you takes your chances, as they say. I usually go with NXS for hunting (where weight is not too big a concern) and long-range steel, and ATACR for short-walk varminting.
I would say find a good used NSX 5.5-22x50 with low-speed turrets and the NP-R1 or NP-R2 reticle and live happily ever after. They practically give those away.
EDIT: Wow, I just blew your avatar up said, "Dang, that's a blacktail on Kodiak!" Then I saw you live there. If THAT's the kind of hunting you are doing I'd go with Trijicon Accupoint 3-9x40. Those climbs up from the beach are a killer! Done it many, many times.