Finally broke down and put out the extra money to purchase a couple Hortilux bulbs. Twice as bright as the bulbs I had been using, very happy so far. The true test will be come harvest time. I'll come back with an update then.

I also have to add that Canadian Garden Supply has the best prices on their Hortilux bulbs. Received my order within a couple days (Vancouver Island) with no issues. Items were packed securely with no chance for breakage in transit. I will definitely be back for my lighting needs in the future.

Cheers.