Turbine

• Pluses: Huge RPM, HorsePower value and Torque
• Minuses: Huge consumption, bad Powerband, big sizes

Single

• Pluses: small sizes, erotic sound, low consumption, good Powerband
• Minuses: low power

V-Twin

• Pluses: small sizes, good Powerband
• Minuses: low power

Inline group

• Pluses: enough small sizes, power
• Minuses: -

Rotary

• Pluses: small sizes, power, RPM, sport engine
• Minuses: petrol only

B group

• Pluses: flat and small, power, RPM, consumption fuel, multi fuel
• Minuses: -

V group

• Pluses: powerfull, balanced, good Powerband
• Minuses: sizes come times big

Radial

• Pluses: flat, power, RPM
• Minuses: Big sizes

Electric

• Pluses: small sizes, good power, low weight
• Minuses: always work on max RPM

can recommend V group and Inline group