that must be the new word for lighting engineer, I love all these new titles for jobs
I'd think the most important thing to ask your friend how much heat they give off, it doesn't matter how pretty they are etc if they kill your lovely flowers
the ones he has suggested sound a bit excessive though, you also have to think how much the replacement bulbs are and what that will cost you over a year. i've worked in shops with fancy lights and halogen bulbs, in the end they get fed up of buying zillions of bulbs