Robscotane – I went with one of Trouts DIY kits a few months ago. I went for that over the DX lights as hopefully I will get more than 1-3 seasons (which appears to be the norm for DX) of life out of it.
Plus its not back in the day DIY tinkering, Trout gives a very well machined housing and all the kit, if you enjoy tinkering then you cant go wrong IMO.
I bought a duff battery off Ebay after a recommendation here, just waiting for replacement batteries/holders/charger from DX and others to build my own battery pack which will cost about £35, or alternatively Smudge (on here) appears to be the battery pack supplier of choice.
My Trout DIY (1800 lumens) light with battery pack has cost me £125, ok not as cheap as above, but should last longer, is programmed to operate as I want it, and was fun to build!