I think you dead on with eather of these 2 scopes. A 4x will give you a good enough point of aim to place the bullet at 500 yards on deer size game. For that reason I would be more conserned about the low end of the power range. I assume that if your like me you will be carring the scope set on the lowest power for those close fast shots. If you can handle them well with a 4.5X scope I would go with the 4.5 x 14 for that little extra edge on the long range. If your more comfortable with a 3.5X for fast shooting I would go with the 3.5 x 10. I have abot 30 Leupold scope at present and most of them are the old Vari X 3`s in 3 x 9. They have served me well for many years, but they lack just alittle when compaired to the new VarX 3`s. I would recomand that you get target knobs on it also. I have a 6.5 x 25 on a .22-6mm that I use for long range varmint hunting. At the range a while back I larzed a stone alittle smaller than a golf ball on the back stop of the 200 yrd. range. It lazered 212 yrds. I set my scope for 1/2 way between 200 and 225 yrds. When I touched the trigger the rock disapered. If you take time to work up a drop chart and carry it and a lazer your long range shoots will be easier. Then if you get a wind meter
you`ll be as good as it gets.