I'd go with 2 x 600w HID systems with switchable digital ballasts (I use lumatek with 360/400/600/superlumen settings). I never use the superlumen setting as it's too hard on bulbs, though the lower settings are really useful if you're having a hard time maintaining temps in hot months, and if you need to slow things down a bit, especially during veg.

For reflectors, I'm having great success with medium adjust-a-wings..

FYI - I switched from 2 x 1k hps to 3 x 600. My room is 6.5'w x 13'l x 8'h. This has really improved my yields since I can get them much closer to the plants now. In addition to the 3 x 600 HPS, I also have 2 x t-5 (8 tube) placed at ends of the room.

Here's a pic of my setup to give you an idea.

Peace,

Farmer Rich

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