yup big expensive lights like the liberator is the way to go but 300 quid is a lot of cash
try the e-bay second hand option , the old halogen bulb lights still have life in them ,retro too and potentially cheap
i lent TK a set of cateye lights i have had for 15 years or so , give a nice warm light and an hour and a half burn time
add some of the 300 odd lumen e-bay cree torches at a fiver each and its not a dear night out
or go for the ,like i did ,lupine halogen lights £35 third hand from a mate ,were over 300 quid new a few years ago , still work fine , give a nice halogen glow and 2.5 hours burn time
you will get hope lights for not a lot of cash on the bay ,
led's and hid lights give a lot of power ,but the definition is not right
halogen bulbs give ,in my opinion a better light . i hope TK chimes in hear as he discribed exactly my opinion on lights
thing is you dont need that much light to have fun outside in the dark