The Victor capo mentioned above has no equal. Very easy to adjust, as is also the picker's Pal, a good second choice as it has additional advantages. You must know if your fretboard is straight or curved when choosing one of these capos. Both are available from Musicians Friend for under $20 ea. These two capos are the only two anyone i've played with has found that do not cause some of the strings to go additionaly sharp on banjo or guitar as they are used on up the neck. Any of the other capos which use spring or over center tension are cute but nightmares to tune. I've noticed many times when pickers show up with spring loaded capos folks that take tuning seriously put their instruments down till the sour tuners stop playing. I also find the same is true when folks that use electronic tuners try to play. They are also reviled for their sourness. A combination of the two causes dehydration :)