Smart Tube Pro > TEVS > Black Label Tube
In that order. If you can't afford STP, get TEVS, if you can't afford TEVS, get BLT, and if you cant afford BLT, get out of the industry.
www.smarttubepro.com - STP
www.bigdotmedia.com - TEVS
www.blacklabelscripts.com - BLT