There was a Sonex at a local fly in a couple of months ago with a Jabiru 3300. Sure did sound good on takeoff.Can the Jabiru be fit into a Sonex Onex? Probably would be even cheaper than a Waiex. I've been to the Sonex plant, and although not a fan of their looks they do seem to be very well designed aircraft. I do like the Onex though. it does have a slightly more sporty look than both the sonex or Waiex.