Might be in the minority here but personally I think the Best helicopter LEGO ever made was the Dino Attack T-1 Typhoon. What do you consider the best one they made? :
LEGO Dino | Brickset
T-Rex Hunter 5886 - LEGO® DINO - Building Instructions - Customer Service - LEGO.com GB
LEGO Dino Island Recon Plane [31058] from Lego Creator Mighty Dinosaurs Extra Building Instructions - YouTube
Dino Attack Collection Complete ✓ : r/lego
LEGO Dino set 5886 for Sale in Houston, TX - OfferUp
LEGO Jurassic World T. rex Dinosaur Breakout Toy 76944, Dino Toys for Preschool Kids, Boys and Girls Aged 4 Plus, with Airport, Helicopter and Buggy Car - Walmart.com
Carnotaurus Dinosaur Chase 76941 | Jurassic World™ | Buy online at the Official LEGO® Shop US
LEGO T. Rex Dinosaur Breakout (76944) – The Red Balloon Toy Store
LEGO 7298 Dino Air tracker Instructions, Dino 2010
LEGO 5886 T-Rex Hunter Instructions, Dino 2010
LEGO Dino: T-Rex Hunter (5886) for sale online | eBay
Lego Dino Attack T-1 Typhoon vs.T Rex 7477 for Sale in Littleton, CO - OfferUp