ep is always going to kick the tungsten in the balls no matter what kind you have. The red thoriated tungsten holds up as good as any so 2% lanthanated is not a whole bunch of difference. I just like lanthanated because I have a bad habit of getting grindings in my eyes and lungs. Every time I get thoriated in my eyes I'm waiting to go blind. If they scanned me when I used thoriated alot I would probably get put in a decontamination chamber. Watch this its a comparison of the tungsten's. http://www.weldingtipsandtricks.com/...odes-gtaw.html