Picking a scope for 223 target

[MH357]

I just finished building an ar-15 flat top with bull barrel, floated forearm and weighted stock. I only plan on useing this as a target fun gun and ocasionaly a ground hog or two. Mostly a paper shooter. I was strictly a leupold guy but have started to notice other manufacturers are as good or better and usually cheaper. I have never used a scope over 12 power before. I am interested in the Bushnell 4200 6-24X40, bushnell 4200 8-32X40 or a nikon buckmaster 6-18X40 with the side focus or nikon monarch 6.5-20X44. Midway prices just for comparison.

4200 6-24x40 478.99
4200 8-32X40 528.99
buckmaster 6-18X40 349.99
monarch 6.5-20X44 459.99

Any draw backs to the 32 power other than small field of view and less light gathering ability.

Any sugestions or thought greatly appreciated.

Thanks Mike H