Why Barefaced
Sound, tone and vibe...
If you want tight but solid lows, punchy mids and smooth top then check out the Compact. If want huge deep bottom, incredible midrange detail and extended yet natural highs then check out the Big Series. If you want more midrange aggression and less bottom than the Compact then check out the Midgets.
Volume, SPL, output and loudness
If you have an amp that can push about 200W into an 8 ohm load then the Compact will be loud enough for all but the rockingest drummers. If you need to go louder than this then you have two choices; the Vintage - basically the Compact doubled up but in a form-factor to suit sitting under big valve heads or get a more powerful amp.
If you have an amp that can push about 300W into an 6 ohm load then the Big One will play loud - if this is more loudness than you need then consider the Big Baby instead.
Size, weight and portability
The Compact isn't just compact - it's a really nice shape to carry. If it's still too big for you then consider the Midget. The Midget does sound aggressive and bottom-shy with your EQ flat but if you turn up those lows and mellow out those mids it will provide more big fat bottom-end goodness than any other equally small cab you can buy.
The Big Baby is the same size and shape as The Compact but marginally heavier. The Big One is a few inches taller, deeper and wider than the Compact - similar to a 4x10" in size but extremely light, a much more sensible shape and with wheels and three convenient handles. The extra handles and the tilt-back casters make it hilariously easy to move.
The Vintage is tall and wide but shallow - it easily fits in the backseat of most cars and is remarkably easy to move around despite looking so big and mean onstage - roll it everywhere and where you encounter some stairs or need to lift it into your car revel in the amazingly low weight.