The difference between the Super Hawg and the Hole Hawg is that the Super Hawg is meant for big holes over 1" and spins slower. The Hole Hawg is meant for holes 1" or under and does it faster. The Hole Hawg is geared toward electricians and the Super Hawg is geared towards plumbers.

For me the choice is easy with the Hole Hawg working faster and being smaller. But it does struggle a bit more with really big holes in 1.5" thick material or more.

I think the Quik lock is the way to go but it does mean you have to have all the right bits.