I used a xxxtreme from CAP with a 1000 Watt Dual Arc bulb which is both the Super Blue and the Hortlux Eye Super hps all in one bulb. The way they made it they are actually two separate bulbs in one casing so depending on how you have your reflector half of the garden is lit by the 400 watt Super Blue and half is lit by the 600 watt Super HPS. The light doesnt blend totally so I ended up with different bud on the left compared to the right....... same clone.
Ya a light mover would solve that for sure. @ Motherload...Agrosun warm Metal Halides are great and if you love those try the Phillips Smart Color Ceramic Bulbs. Rare but you can get them