I just picked one of these up and have a few ideas for optics, but haven't decided outright. My budget is around $300, and I'd like to be able to get rings within that as well. My preferences are simplicity and ruggedness, which is why I have found myself considering a fixed 4 or 6 power scope. Examples including the Weaver Classic K, the SWFA SS, and Leupold FX-II come to mind. If I go with a variable power it will be a low-med power range like a 2-7, or 2.5-8. Does anyone have experience with the optics mentioned? What do y'all think of the Nikon P-300?