I need to get a good spotting scope and could use some help. The majority of its work will be for hunting so I want a 65mm objective lens, angled eye piece, and under $1500. I have found some used scope bodies with an attractive price, just no eye piece. Are the eyepieces interchangeable? Can I use a Zeiss in a meoptia? And vice versa? Do I have to stick with the manufacturers eyepiece? I don't have the opportunity so look through any glass here, everything must be ordered. Thanks for any and all help.