i have the weller 100W it'll do everything (cells or V2 motors) providing you fit the correct sized tip. i'm still on my first cell tip but 2nd motor not bad for nearly 10 yr old.
http://uk.farnell.com/jsp/endecaSear...jsp?SKU=415820
the 60W is a bit weedy for continous cell usage nad the 120W is overkill unless you build cells all day.