i found a review of the magnatech
from justpistols.co.uk
but magnatech's and scw's are not the same gun, internally, i think. i always looked at the magnatech line as the economy version that wa is branching out to. scw 3's have a "high-speed steal pack" (from redwolf) which i do not know what that means.
a sidenote- i have a scw3 s&w 1911sc and it cannot handle propane, as i bravely tried once. it jams simmilar to a ksc m11 in that extra bbs come out of the mag and wedge itself between the chamber and the loading nozzle area. the effect is that the slide cant come back and must be cleared before firing.
i guess the plus side of owning a magnatech is that it cost less to go full metal (than traditional wa guns)
edit- it seems many retailers are calling the cheaper wa's scw3 magnatech, so i don't know what to believe now