Looking for real world experiences with the magneto speed and specifically the sporter version. I have a regular chrony that I use now that works fine but we all know what a pain they are to mess with especially at a busy range. The V3 sounds great but at almost $400 thats a bit steep. The sporter version sells for $189 and seems to include all of the features I would ever use. Ive been reading lots of reviews and they are either great or terrible with complaints of being cheaply made and not securing to the barrel real well. I trust you guys so I am counting on you to convince me either yay or nay. One of the most common complaints I read is that it changes point of impact and affects group size. All I can say to that is duh! Not planning on doing any load work while attached just want to get solid chrono data after I have found my loads.