Went for the stretch type boot when did both sides on mine, took rough measurement of cv diameter before ordering and although tried using the fiat type clamps went for thin jubilee clamps in the end which after being done over a year ago now are still going strong.
Should you choose this type of cv boot I used a cone to stretch them over and put the boots into a bag and left in warm water for 30 mins to aid stretching over to fit, yes I still sweated when putting them on but all completed with little worry and the kits also came with new axle nuts as the knuckle still needs to removed and new nuts are required as they need to be tapped on the outer edge to prevent loosening, guess now having scribbled all that could of gone a step further and removed cv joint to slip a boot on but stretch type did a good job for me.
Another thing to remember when working on the steering joints is that now the small rubber protection boots for the tie rod and wishbone if damaged will be an mot failure so should you damage these when removing the steering knuckle check you put new rubber boot on them and fresh grease before refitting, same applies to the boots on the droplinks though not removed for working on the cv boot...these small rubber boots are available as a seperate item from most good motor factors.