Unfortunately you dont write whether you grow in or outdoor.. But anyhow, i would recommend the "Flora-serie", from general hydroponics.. They have a larg variety and evryone can afford to buy it..
I grow on a 10 week-turn, indoor, with 1x250w HID + 1x400w HID, in soil, co2-addition, temp.control and the FLORA-serie..
The serie i use is : Flora Micro, Flora Gro, Flora Bloom.. and diamond nectar as an extra additive, when the 12 hour-lightning starts, and then i use Ripen the last 10 days before harvest.. this way i can produce 2 plant carrying app. 400gr pr. plant, and start 4 small plants up in small pots for seeds or next harvest.. :-)
I found some links that might be useful to you. :

Diamond nectar : http://www.genhydro.com/genhydro_US/diamondnectar.html

Flora serie : http://www.genhydro.com/genhydro_US/floraseries.html

Ripen : http://www.growroomsuk.com/general-h...ics-Ripen.html

Hope this helps you a little..!! Keep up the good work and let it all grow green..

*plur*