I just fitted some Ansell Tornado PRO 6' twin a couple of weeks back. Very impressed with them, IP65 rated and very bright instant light. I cannot fault them. Anyone who says flourescents are just as good has never used one of these.I have some clear panels in the roof and these things still make a big difference during the day. They come with quick release fittings for wiring and mounting.They were £42 each and come with a 5yr warranty
I've done the whole cheap/bulk LED thing before and they seem great at the begining but I won't do it again. You go from thinking they are great to suddenly realising that things aren't as bright as they were. You may save initially but in my experience they just aren't as good.
I have used quite a few LEDs now - I find fluorescents get a bad name because the diffusers are filthy and have gone yellow with age! I cleaned a few of ours and the difference was incredible
