My mom, god bless her, loves my artwork and bought me some watercolor paper for Christmas. She went to the local art store and, at the direction of the salesperson, spent a mint.
One of the items she bought was watercolor canvas, a concept I'd never heard. It is essentially that: very thin canvas, supposedly designed to be used for watercolors. I've never tried it, and my initial thought was, "Gee, how does that stuff stand up to water??" But I figured I would give it a go in painting the guy and his plants.
Some of you have written to me and mentioned in the comments that you might try your hand at painting. As you can see, "watercolor canvas" can't even stand up to the most simple of washes. Watercolor canvas is an oxymoron and a product disaster. Unless you're hoping that your paintings turn out in 3-D relief, skip the farce of this "paper."
My recommendation: go for the 140 lb paper. I've been using Winsor & Newton paper, and it's fine. Use 300 lb for finished works that you want to hang somewhere. But steer clear of anything else.
It wasn't all wasted effort though... I'm getting better at drawing this guy and I'm strengthening my sense of how I want to paint this.