It would be kind of nice to get both.
I suppose I could probably do that if I just bought the base model of each. After all, I am sinking a lot of money into my new computer’s large SSD (it always seems it is a lack of hard drive space that forces me to get a new computer...I want to avoid that next time).
That, though, wouldn’t work for several reasons. One, I need more than the base model’s RAM for my VM Windows software. Two, I have several engineering software packages that have a software key for only one computer operation. I wouldn’t get the luxury of changing that depending on my current need for portability or power.
I need one machine so that everything is right there in one portable package. I would not like having to sync the two computers.
I really think if I hadn’t discovered the usefulness of a large 4K monitor (connected to my 12” MacBook) I would be very likely to get the 16” machine for its display. It’s different now since when I’m at work I don’t need the big laptop screen any more.