RE: Scopes
The 4200 is an excelent scope and come with better features than the Leupolds do. Between these two and most others Bushnell would be getting my money. Everyone always talks about Leupolds warranty but Bushnell has the same lifetime warranty on their products also.
The 4200 has fully multicoated optics on all optic surfaces and the Leupold VX-II is multicoated on the exterior lense surfaces. The 4200 also uses a alluminum/ titanium one piece tube to give it more strength and lighter weight than standard alluminum tubes.
For magnification the 3-9X or the 4-12X in the Leupold or the 2.5-10X or the 4-16X in the 4200 would be my choice if you are truely hunting in open territory. I would most likley go for the 4200 in 2.5-10X. That would provide plenty of magnification for big game animals farther than you will probably be shooting.