I am a fan of the EYE Hortilux. I figure for $25 more, Id like to get the best bulb out there. However, the only time I have noticed any type of difference, was with 1000 watt lights and I still think the Lumalux Sylvania I compared to was used when I thought it was new (which would of course make a difference).

Same thing with cars. If you own a BMW M3, you dont buy some $100 tires for it when they wear out. You get the pimp $200 tires. I try to treat my babies as best as possible in every way possible. And everytime I do...the results reaffirm my extra efforts.