The Prelude does all the things Diki mentioned..although not with the two knobs Diki mentioned,,The Prelude will adjust the same parameters in real time (menu/cursor)...and Yes the Prelude has the "numeric" thing too..
I would suggest folks check out the manuals in detail..including the Version 2 manual...
I think the Prelude is the better value..and I do not see any negatives ..that the GW8 would have any advantage..