i dont know if im the only person thinking this, but you post some crap posts, now dont take offence to that, but you really do.... i dont want an internet fight....
in their right mind people will think this is a shite question, both sets are good cranks, all except middleburns come in either standard or isis, the latter bottom bracket stylee which is stiffer and stronger in my opinion.
middleburns cannot run front freewheel, whereas echo's can. its make your own choice here.
please stop postin so much shit....
ben
:S