It appears the Stalker Sport ($895.00) reads up to 250mph. Where as the Pro ($1495.00) reads up to 300mph. The Pro seems to be much more sensitive, and can read a baseball up to 400 ft away. Where as the Sport is still out there at 350 ft away.

Based on what I've read, it appears the Stalker Sport is more than capable of handling your needs. Unless you flying over 250mph... but for the price difference, get the Sport.

Randy Bridge