ImpulseRC Helix zx6 6". I use this as a kind of hybrid quad. Lots of power but it's also fairly heavy. Need to flip it to reversed props and bf3.2

Part List

Frame	Helix ZX6 FPV Frame Impulserc.com	$268.60
ESCs	4 x EMAX Bullet 2-4S DShot600 30A ESC (59 builds) Racedayquads.com	$51.96
Motors	4 x EMAX RS2306 White Edition 2400kv FPV Racing Motor (87 builds) Racedayquads.com	$79.96
Propellers	DALPROP CYCLONE T5045C (216 builds) Expressdroneparts.com	$3.00
FPV Camera	RunCam Swift 2 Full Size 600TVL CCD FPV Camera w/ OSD (2.1, 2.3 or 2.5mm) - Choose Color & Lens (412 builds) Racedayquads.com	$34.99
Receiver	FrSky XSR 2.4GHz 16CH Receiver (480 builds) Alofthobbies.com	$13.10
Batteries	PULSE Racing Series 4S Li-Po Battery 75C w/XT60 (14.8V/1350mAh) w/XT-60 Connector (22 builds) Amainhobbies.com	$34.99

Helix 6"