iron cobra, dw 7000 are a single chain drived pedal, less power, are you a bewginner, cause normally when you have a quesiton like that you look it up onto the internet and compare the features, or try one ouy
i myself have been playing for about 2 and a half years, i am 14 now and forget aboiut those, go for axis a-l2 longboards, they are made of air craft aluminum and steel which means that they are light as f*ck and are smoother then the iron cobra and the 7000 put together....spend the big bucks and get the axis, if your looking to buy, biatch