Greetings, Does anyone know what the differences are between these 4 enlargers: LPL VC7700, LPL VC6700, Omega 6700 VCCE, Saunders/LPL or Omega 670MXL? I believe LPL Shonji actually manufactures all these enlargers -- or they may all be the same one! -- which are then branded differently depending on market area. I can't just go and look at them in person, so I've been forced into fruitless contact with reps from all three companies. Thanks a lot for any and all help.