thats really strange, you would have thought that if you changed the lamp from one thats 3000k to one that is 8500K then you'de notice quite a reasonable difference.
perhaps your friend didnt align the new lamps ?
anyway, I'm still undecided,,,Ive just bought an efx600 off ebay,,so i'll give it a try,,
and i told you gav, i dont like the shape of wizards,,,i mean i spose theyre ok on stands like you have yours,,but they just wouldnt look right on my truss...