Aluminium Venetian blinds are typically used in the slimline size (25mm slats) and sometimes the micro size (15mm slats).  They have a wide range of colours to suit all decors and also come in metallic finishes, which would suit a very contemporary home.
Timber Venetians are available in Cedar and Basswood and can be stained or painted to suit your needs. Timber slats can be 46mm or 60mm. Due to the thickness of timber slats, the “stack” (the compressed slats at the top of the blind) can be too large for use over places like sliding doors.

Faux wood venetians are made from materials such as polystyrene and vinyl wrapped foam and come in similar sizes to timber venetians. A good copy of their timber cousins, their main advantage is a lower price point. Due to the resilient materials they are also an excellent option for wet areas such as bathrooms and kitchens.