I have a standard in-line booster and it's very effective. BTW they don't add 100cfm of water lift, but 100cfm of airflow.
From speaking to others who have the Mighty One, they not only make a good spotter and in-line booster, but are also ideal for small upholstery jobs and even small carpets.
I gather that they are 100psi and a single 3 stage vac, far superior to my "ordinary" spotter

Being a quite small recovery tank, the vac doesn't have the weight of much air to pull so in effect it's "punching above it's weight". In my view, it's not a two-in-one" machine, but a three-in-one.
When my spotter finally goes to rest to that shag pile in the sky, I'll probably replace it with a Mighty One and sell my in-line booster.
Safe and happy cleaning

Ken