which HPS ballast to chose

Hi i bought a 70w hps bulb and am planning on growing 1 plant i need a ballast to get it to work on this page i am a new grower and i was wondering which would be the best performance and easiest set up

http://www.1000bulbs.com/70-Watt-High-Pressure-Sodium/

i need a ballast one of those any one is fine money is not an issue thanks, smokeabowl

PS: http://cgi.ebay.ca/70W-70-watt-HPS-ED17-LU70-High-Pressure-Sodium-Bulb_W0QQitemZ260361998389QQcmdZViewItemQQptZHydroponics_Seed_Starting?hash=item260361998389&_trksid=p3286.c0.m14&_trkparms=72%3A1215%7C66%3A2%7C65%3A12%7C39%3A1%7C240%3A1318 This is the bulb i have