I just bought my first Robust tool rest - the 14" J-shaped inside bowl model. The quality, craftmanship, and beefiness impressed me as soon as I saw it, but using it over the weekend made me really glad I bought it. I had planned on using it only on bowls, but I see it as my go-to rest, and probably the first of several Robust rests I plan to buy.
You really get what you pay for.