Used stock RB600 or new mod'd 250?
Sorry if this has been discussed before -- I didn't see anything though, besides debating which mods.
These seem to be roughly the same price ($450), which is the better route? I'd probably land up keeping it for many years, so it's not really a stepping stone to the next arm.
It would be mounted on a Systemdek IIX and mated to a Grado Platinum cart.
BTW -- the 250 would be an Incognito rewired OEM, with either Expressimo or OL weight.