Hi,just to too setup a new build with two 4 ft 8 x 54 watt lights so running 16 tubes etc.Been doing a bit of research and thinking of substituting a couple of these in each unit to try and keep tube replacement costs down just a bit.They are non branded so not much dearer than a standard fluro.I haven't actually seen one in action but I've seen the osram 6500 k tube which to my surprise isn't as yellow as other 6500k.I can't get my hands on one to try have to buy a box of twenty but its about the same price as 5 ATI or Giesemans etc.Has anybody seen or tried one of these tubes,I've found a little info which says there not a bad tube.