reflector for 600w on light mover

whats a good reflector for a 600w light being used on a light mover?

its a light rail 3.5

I was thinking something like this
http://www.4hydroponics.com/lighting/rssvert.asp

i was planning on a even 4x8 canopy

I have one of those reflectors and I don't much like it, its really big and you have to break it down to store it and IMO is not a great reflector. I have a Super Sun 2 that really like and Magnum XXXL's are good reflectors but both are air cooled hoods. I think if looking for a non air cooled hood you might want to take a look at the adjust a wing reflectors, I have heard good things about them and they seem like they would do well on a light mover