It probably qualifies me to be such a cheapo that I do my hair by myself but still i save so much money. I use either Organic Root Stimulator Olive Oil Relaxer (Normal) or TCB's Olive Oil Relaxer (Regular).
Both work exceptionally well and leave my hair shiny and healthy. I find that the Root stimulator is gentler on my hair and doesn't over straighten as other relaxers tend to do. What I like about TCB's Olive Oil Relaxer is that it leaves my hair shiny and moisturized rather than dry and frizzy like other relaxers tend to do.