Expensive Canvas Pliers?

[Julie Deane]

Hi -

I've found out that I just don't have the strength to stretch large canvases well. I am wondering if the more expensive canvas pliers make a difference. I am particularly wondering about some made by the John Annersley Company http://www.johnannesley.com/canvas_pliers.html

They are advertised as providing more leverage, and they look like they do. Does anyone have these or others that they would recommend? I don't have the luxury of having anyone to help me do the stretching very often.