Damn it I am in the process of upping my setup to 10g. This makes me want to leap to 20! Would be good for (easily) keeping large quantities of BM's Blonde or Cream Ale on tap at all times, but then I'd still need a smaller setup for tweaking my recipes, and lets face it, there are certain beers that you really don't want to have 20g of. Hope he is able to get what he is looking for, but it looks a little over the top (price) for most people to jump on.