Nail clipping help

I used to take Ilya to the groomers or the vet to get his nails clipped, however, he is now giving them a hard time so I thought about trying this myself. I bought a heavy duty clippers that look similar to wire cutters and it takes a bit to get him used to the idea of me clipping. He still acts like it's uncomfortable, could it be pinching his quick? I looked at the other type of clippers where you insert the nail into a hole and squeeze the handles to "clip" the nails and wondered if this would be a better buy.

Any suggestions?

I'm working on getting him used to a very patient groomer, so far he likes her but won't let her touch his paw yet.