Back on topic, re: capos

Try different models. Make sure you know why you are capoing in the first place. Learn different techniques with the capo.

I almost always capo directly onto the fret-wire with the front edge of the rubber pad. It seems to avoid pulling the instrument sharp, but can crowd your fretting hand if you are playing 'open' chords.

I have a classic Shubb, a Kyser (2nd one - spring broke on the first one) and recently have acquired a G7th Newport model. The Kyser is the easiest of my 3 for one handed adjustments, the G7th stays out of the way the most for fretting at the relative first fret, but is a bit fiddly to get the pressure set right.

-Scott