This answer about creating infusions suggests using a compressed gas siphon to quickly infuse liquids with flavours from 'fragile' herbs.
The manufacturer of the popular iSi compressed gas siphons seems to sell whipped cream and soda siphons, but neither is advertised for the aforementioned infusion purpose. I'm not at all averse to using one of these devices for this different purpose from that which it was designed, but I'd like to find the most usable device for creating infusions using compressed gas.
This leaves me with the following questions:
Is there a compressed gas device designed specifically for creating infusions using this method?
In general, would a soda siphon or a whipped cream siphon be more suited to creating infusions?
Are there particular attributes to look for in a compressed gas siphon that lend themselves to creating infusions?