This is a short comparison of the difference for the Meteor 65 pro and the 75 Pro, both are nice flying quads, but i do think each of them are build for different purposes. Will be comparing the specs, flight characteristic and durability. These are just my personal opinion so feel free to let me know your thoughts at the comments section!

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Meteor 65 Pro Specs
Item: Meteor65 Pro 1S Brushless Whoop (2022)
Weight: 23.01g (without battery)
FC&ESC: F4 1S 5A FC (Serial ELRS 2.4G)/F4 1S 5A FC (SPI Frsky)
Frame: Meteor65 Pro 65mm 1S Brushless Frame
Motors: 0802SE Brushless Motor
Props: 35mm 3-blade props (1.0mm Shaft)
Camera: C03 FPV Camera
Tilt: 30° (default)/20° (optional)
VTX: M03 25-350mW VTX
Canopy: Canopy for Micro Camera / Canopy for Micro Camera 2022 Version
Battery: BT2.0 300mah 1S Battery
Flight time: 4.5 mins

Meteor 75 Pro Specs
Item: Meteor75 Pro Brushless Whoop Quadcopter
Motors: 1102 22000KV Motor
Battery: BT2.0 550mAh 1S Battery
Frame: Meteor75 Pro Brushless Whoop Frame
Propellers: Gemfan 45mm 3-Blade Propellers
Camera: C03 FPV Camera
Tilt: 30°/20°
Canopy: Canopy for Micro Camera 2022 version
FC&ESC: F4 1S 5A FC (Serial ELRS 2.4G) V2.0/F4 1S 5A FC (SPI Frsky) V3.0
Receiver Option: ELRS2.4G, Frsky/PNP, TBS Crossfire
VTX: M03 25-350mW VTX
Flight time: 6:40
Weight: 31.33g