16GB/1TB for me. I'm really glad I can get a 1TB Mac laptop without having to spend above $2000. I use it for Logic Pro, and I can get by with 256GB and external storage... and 512GB is enough... but just barely. So 1TB is a great size for me. I can store everything I need on it, with a good amount of headroom.
The performance/screen/battery life/size is at a point where I don't need, or really even want, anything more. I'll use this until it breaks, so I didn't mind spending for the higher configurations. The ONLY thing that is missing is the number of ports, otherwise it's a computer I don't ever have to think about.