I bought a Fullfield II last year for my wife's gun. NIce. I already had a signature series on my gun and a set of signature series binos. Burris is a good product. Go with the signature series. I know they're high but well worth it.
I have the FFII and the Signautres series. If you can afford it go with the Signatures series with Posi Loc...I have one my .338WM and in 3 years have had to make no adjustments. I hagve the FFII on my smaller bore guns and they work flawlessly. You cannot go wrong either way. Forever Guarantee!!
Try to put your tree stand in a tree with plenty of background cover, keep the prevailing winds for that time of the year to your face, and take care of those pesky squeaks and creaks your stand may have developed while sitting in the shed. A good treestand lube can be made by heating petroleum jelly until it reaches a liquid form. Some hunters have reported success by including a cover scent in this mixture before applying it to their stands.