I'm pretty happy with my TillyTec lights: HID35, LED1000 and W30 backup, and can certainly recommend them. I made some short demo clips while cave diving in Yucatan/Mexico, so you can actually see for yourself...
(1) HID35 (with flood reflector) & LED1000 (with diffuser)
(2) W30
FYI: I met Tilly...