I would take a 27 lb. SL-1200MKII over a 13 lb. Denon DP-31L any day. Especially with the aftermarket mods that are available such as those from KAB Acoustics, an SL-1200MKII can compete with decks costing much more.
There is a reason why the new SL-1200GAE is selling for $4000! It is a direct descendant of the SL-1200MKII.