The Deluxe Bench Capper is one of the sturdiest cappers we have used.  It is almost completely metal, is vertically adjustable for different sized bottles, and can accomodate both 26 mm and 29 mm caps.

The base features a bottle stop that will help you place the bottles in the perfect place everytime, making quick work of the bottling process.  This capper is definitely one of our favorites, and is probably the last capper you'll ever have to buy!