I was looking at purchasing a wind reader and found these two...Caldwell 112-350 for $29, and the LaCrosse Tech EA 3010u which is normally $50 and on sale for $29. I would like to get a kestrel or menstrual or whatever but I don't want to spend over $100 on something that I may not like/use/keep. Does anyone have any experience with these two or can you suggest any others in the $25-$50 range? Also, are they even worth the hassle, because you can only measure wind at your location and it could be totally different at the target.