I'd like to add to barshakers list:
At the budget end, it is the thruster, AX3 or X'Air.
Mid value is Sky Ranger and Rans with 2-stroke engines.
Upper mid: Sky Ranger, Rans and Thrusters with 4-stroke engines. Medway SLA, and the Jabiru.
Top end: Eurostar, C42, CT2K , Eurostar and with it's 750mile plus range and 185mph cruise the 912S MCR ULC (Ban-Bi) is the Daddy.
A good place to find out prices is
www.afors.co.uk
Rans.
(Happy to be Mid value)