Yes they are worth it, the only thing bad about them that i have heard is the paint. Nothing some powdercoating cant fix, or spraypaint every so often. If i didnt like to go fast in a strait line id buy them.
I love mine just DONT i mean seriously DONT use WD-40 to clean the heim joints dirt will stick in there and ruin them quicker then **** graphite is the best lubrication for Heim joints but definetly worth 340 bucks I got the arms for 310 and 30 for shipping very strong as far as I can tell ive put mine through hell and the worst thing that happened is the paint chipped.