I have a choice of crushed rock or a mix or crushed rock and clay called "base" to use for my driveway and ramp up to garage. What would be the best to go with? Both are the same cost at $5 a ton. I am leaning towards the crushed rock as it allows water to drain down through it whereas the crushed rock/clay base mix will pack down and not allow water to drain through it but wash off of it. Both have some advantages and disadvantages. The clay mix I like that it will pack down hard but I am concerned about it becoming muddy and soft in the event of a large amount of rain or snow. Any ideas, comments, or suggestions very welcome.