Hi another to add to the mix is the Spirit pro its cheap at £145 it has bail out recovery and also has Stabilisation for scale pilots and beginners here is the full spec I am just fitting it to my Goblin 630
Hardware
Very rigid, CNC milled, anodized and sandblasted enclosure
Color: Aluminium satin
Dimension: 33x32x14mm, weight: 20g
Power supply: 3 - 15V @ 25mA
Operating temperature: -10°C to 60°C
Latest generation, Ultra Fast
32bit ARM processor: 210 DMIPS
MEMS sensor with 9-axis sensor fusion
(rotation to 2000°/s !)
Gold plated PCB with Pb-Free soldering
Integrated S-BUS Inverter
2x native Spektrum connectors
3x connector for power supply, 5x for servos
Additional peripheral support with future updates (GPS, vario, data logger)
Features
Super-smooth flight control
Paddle simulation with inexpressible feeling
Paddle mechanics support
Extreme vibration immunity for all helicopter types
Spectrum analysis for model diagnostics
Flight log with recorded events
Easy configuration with setup wizard
Smartphone or tablet support via Bluetooth
JETI-Control with transmitter integration
Available for Windows, OSX, Linux and Android
Stabilisation for scale pilots and beginners
Reliable, full-featured rescue system
Integrated Bank Switching
Governor for Electric, Nitro and Gasser Helicopters
BEC tester with load verification
Support for PWM, Futaba S-BUS, PPM,
Spektrum DSM2/DSMX, Full JETI Duplex integration,
SRXL/SUMD/UDI/X-Bus receivers
Support for all servo types:
1520/960/760us @ 50 - 560Hz
Support for CCPM 90/120/135/140°