I tried the Ozark and the own-brand ones from Hobgoblin and Music Room (Ashbury and Tonewood, I think), which appear to be the same instrument.

The Ozark is significantly smaller and punchier, it comes with a recommendation not to retune from CGDA all the way to GDAE, so mine is currently tuned DGDG low to high, which I find more usable for tunes in G than GDGD - the D in the bass can act as a drone and most tunes in G go down to D and/or up to the G an octave-plus above, which gives me the range.

I've had it about five months now and am very pleased, although there are some minor fit-and-finish issues which do not affect the tone.

The others I tried were guitar bodies with a slimmer and shorter neck, which meant a full-size case or gig bag (the Ozark fits a 1/2 size classical bag/case). No more volume over the Ozark but a little more richness and bass, although if I wanted something guitar-sized, I'll take a guitar. The Ozark was punchier and is audible through the Castagnari Wall of Sound at sessions.

Eagle Music in 'uddersfield are currently doing Ozarks with a free hardshell case at a bargain price.