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? :
T-1 Typhoon vs. T-Rex : Set 7477-1 | BrickLink
LEGO 7477 T-1 Typhoon vs. T-Rex Instructions, Dino Attack
LEGO Dino 2010 Track Transport 7297 : Amazon.co.uk: Toys & Games
Lego Dino 2010 7298 Helikopter im Original Karton UVP129€ in Baden-Württemberg - Heubach | Lego & Duplo günstig kaufen, gebraucht oder neu | eBay Kleinanzeigen
Dino Attack | Brickset: LEGO set guide and database
Anyone remember this beauty from 2005? Dino Attack Helicopter, still one of my favorites. : r/lego
Dino Attack | Brickset: LEGO set guide and database
LEGO 76949 Jurassic World Giganotosaurus & Therizinosaurus Attack with 2 Dinosaur Toy Figures, ATV Car & 76944 Jurassic World T. rex Dinosaur Breakout Toy : Amazon.co.uk: Toys & Games
Dino Attack | Brickset: LEGO set guide and database
LEGO Dino Attack 7477: T-1 Typhoon vs. T-Rex, Brand new - unopened, ships fast | eBay
LEGO 7298: Dino Air Tracker | Brickset: LEGO set guide and database
LEGO Dino Attack Fire Hammer vs. Mutant Lizard - Walmart.com