cambridge audio 840c vs. modwright 9000es/999es

I am wondering if anyone has compared these two units... I see the sony modwrights coming up for $800-$1200 quite often, have heard good things about the 840c as well.... I have a sony nc555es with full sacd.mods treatment by Matt Anker..... and it sounds fine... until I spin some vinyl, that is.
I have narrowed down to either a used modwright or an 840c as my upgrade... any advice? Thanks in advance.