I'm not sure which is easier. Now that I know that clay gets softer when it's slightly moist, I can manage it.
For me, the limiting factor is how fast I can make, buy, and wheelbarrow compost around my yard. I've heard that organic matter is consumed fastest in warm, well-aerated soil (like sand). My clay take about 18 months to revert after I add compost. How long does your compost last in sand: 18 weeks?