John the problem with the soil type I have is that when the moisture level is just right you would think you were gardening on the best soil in the world BUT ... have you ever been making up grout for a tiling job and you add a teaspoonful of water too much and you arrive at a soup ?
That is my soil that is, then the sun comes out and drys it as hard as concrete. My neighbours think I am mad, you see I believe in the hoe and there I am hoeing aways in blazing sunshine because I know those weeds are history in these conditions with the hoe... it has to be done
Anyways I use an MTD heavy 450 pro tiller and it does a good job and I do know that tillers are not the best thing for soil structure ... but when the soil is compact, which it always is in the spring time, the heavy winter rains compacts the soil terribly. One other thing John look up the annual rainfall for where you live and the annual rainfall for Lembeye in Pyrenees Atlantiques I think you will be surprised.