I ran the Sig Kilo 3ks for years and found them to be super effective, they range fast and getting your dope by linking to your Kestrel worked well. I've been running Vortex Fury 5000 ABs this year and like them better i every way. The LRF is just as fast and ranges just as far but having the full AB suite on board is even better than linking to a Kestrel, imo, as you never drop a connection or need the connection to "wake up". Being able to adjust the wind call in the binos is handy as well. The only way to improve them is to swap the ranging module for a 1550nm unit and etch in a mil reticle... Steiner make some like that you can purchase for the low price of about $10k, haha.