be prepared to swap out the ballasts and bulbs but other than that i havent heard too many negative reviews.
if you buy the reflectors I could help you build a nice unit out of wood and steel u channel I have a drill and a small mitre saw.
you would need 4x 48" reflectors ($120)
2x halide reflectors (used - about $50-$150 depending on what you want)
2x250 watt ballast (dual or two single units - i recommend singles) ($200 - $300)
one 4 bulb t5ho ballast - you could run an ice cap and over drive if you wanted. ($60 to $125)
bulbs (2 halides plus 4 t5s) ($250ish)
total cost is going to be around 600 including bulbs i think. Ship to the border and order from teh states is the cheapest. Couple guys on canreef are getting rid of some reflectors.