I don't find it heavy, if I apply it in a certain way. You have to be very careful with how it's applied, and then it looks quite natural.
I love it because I have oily skin and it is the ONLY foundation I have tried, and I must have tried over fifty, that doesn't slide off my face and lasts all day.
Colour matching is a problem for me. Quite a lot of the shades are orangey. I have to mix two colours - Ecru and Fresco, to get a good match.
Best way to apply it, so it doesn't look cakey and mask like is to moisturise or prime your skin first, so there's a bit of "slip", then using only a tiny amount - half of what you'd usually use in other foundations - apply with fingers rather than a brush. Less is more with this.
I imagine if you have normal/dry skin, and don't have a problem with other foundations staying put, or you've applied it as you would other foundations, with a brush, you might hate this.
And it doesn't come with a pump, but the MAC pumps you can buy separately, fit the bottles.