I disagree about trailing behind in terms of your shots. They look impressive and I love the Wasp 6332.
I have heard and read a lot about people saying the Canon 65mm MPE 'is difficult', 'shouldn't be your first macro lens' and other such statements. Personally I don't hold with this view at all. I have never found anything easier in all my life - seriously. In the field I keep about 90% of the shots I take because the lens seems incapable of a bad result - so long as you have the flash unit too. It isd almost impossible without flash.
It does take patience for sure but I simply set it to the smallest apperture and the shutter to 200th second and let the flash take care of the rest (although I do use manual flash and experiment with pointing angles etc).
Compared to what I used to usein my teens - an old autobellows with no flash it is a breeze
I would encourage anyone to go with the MPE 65mm if they use Canon. The quality is superb.
Chris