other things to consider good remote well lit easy to use. battery life recharge able. I had a Fox Pro Fury for 4 years and upgraded to the Fox Pro Shockwave. I love it great sound very loud nice well illuminated remove easy to read panel. battery life long. I don't really know of anything better than the top model which is best for the open prairie if you really need it loud. Honestly you only need about 50 sound files but more can't hurt. called in elk, yotes, bobcat and cougar so they do work. just need to be mindfuly of your set up for wind direction and field of view. I have been burned a few times with animals coming up behind me because I got the wind wrong.