I find the ones that are like scissors are the easiest to use {does that make sense....!} mine are the mikki ones but there are lots the same made by other companies,we have the guillotine type at work but could never get on with those or the ones that look like they came out of hubby's tool box,could never seem to judge where to clip so easily, so even at work we now have a special "my" pair to make me & the furries happy....