Replace your fluro tubes!
Had a flickering fluro tube in the workshop, so I thought bugger it, I'll get some decent ones this time.
So off to Bunnies I go (after several stops at local guys, none of which stocked anything but one type of Chinese junk).
Umm'ed & arr'ed for a while then grabbed 6 x NEC quad-phosphor tubes. Not cheap - $16 a piece. Figured if they're not up to scratch I'll bring them back.
Got home, replaced all tubes in the main lights in the workshop.
WOW. HUGE difference. At least twice the light in there now, and it's clean white light, not a mucky yellow colour.
DEFINITELY worth doing guys. You'll be amazed how much better they are. 20,000 hour life & 3 year warranty as well.