Venetians over verticals any day of the week - unless you are going for the 90's office look 
A friend had some very expensive ones made (for the same reason as you), she thought/hoped/prayed that going very 'high end' would make them look good - dreadful fail... and you can't even use the 'fabric' for anything else. They ended up not putting anything up - which was my suggestion in the first place 