I would go for the Baritone.
In my opinion, baritone is the
most versatile ukulele.
-Can be strung DGBE (normal baritone tuning)
-Can be strung GCEA, low G or high G. Personally I use a low-G on my Oscar Schmidt Baritone. Sweet sound.
I recall Southcoast ukes saying that a baritone's body size is better suited for low-G than tenors. A baritone is like a "super tenor".
-Can be strung GCEA one octave low. This is a fantastic tuning, read all about it here:
http://www.ukuleleunderground.com/f...-new-set-of-strings-before-YOU-GOTTA-TRY-THIS!
(including sound samples)
-Can even be tuned like a bass guitar (the UBASS is based on a baritone uke body), although it would need heavy modifications to do so.
-Has better sustain and deeper sound than all the other ukes.
Try playing a soprano or concert along with a guitar. You'll be drowned out like a mouse in a flood. The tenor's "getting there", but a baritone tuned either GCEA or even DGBE can play on par with a guitar in an acoustic setting.
-Larger fret spaces and longer scale may make it easier to play certain songs.
Sure, it's a little "big" for a uke.
But it's still puny compared to guitars.