I personally find I get more change out of a partial capo - it is taking over my life (musically speaking). The most flexible is the Scott Tuning Capo (but you will have to put rubber pads on it yourself) or there is the US mde third hand which I do not find so good.

Mostly now I use the special shubb. Put on fromthe top it frets the SDand G strings, and if you do that at the second fret you now have DADGAD - but one tone up. But, and here is hte beauty - all your barre chords up the neck are what they were before.

D (ie E) takes one finger, and you have the other fingers to piddle about with and play tunes. Several G (ieA) shapes, and the A (ie B)
is 709807 (but because of the capo that first 0 is 2 ie a B note). There is also a D (ie E) at 0222900 (the 2s being the cao, so it's one finger again)

If you don't want all 6 strings it is a lot more flexible