From what I understand you can't use aerobraking on Mars for landing as the atmosphere is too thin. From what I understand Mars is quite problematic because the atmosphere is too thin to benefit from parachutes, but not thin enough like the moon where you can enter in whatever angle you want.
So I wondered if there are any significant reductions in required energy to enter Venus compared to Mars. And also how it compares to the Earth. E.g. would the heat-shield need to be thicker or lighter. Will it be easier or harder to enter Venus than Earth?
I assume parachutes would be more effective on Venus.