Johnny, I'll "second" what the other members have said above. I prefer the soprano size, but always had the nagging sensation that the very popular "g C E A" tuning left the strings feeling just a little too "floppy" and the tone a little uninspiring.
Being primarily a solo performer, I'm at liberty to tune as I please, without creating complications for anyone else. So, sometimes I'll tune upward just a half step (one fret's worth), and on many sopranos that improves things significantly.
More often, I'll go ahead and tune upward a full step (two frets' worth) to "a D F# B"-- this eliminates that floppy feeling, and improves tone, volume, and intonation.
I tend to go with Martin M-600 strings, and I've never had an issue in terms of over-taxing the bridge or anything like that. In fact, my Martin S-0 soprano came with a "Care and Feeding" brochure which specifically recommended the "a D F# B" tuning (with Martin M-600 strings, of course!).
Now, on a concert scale uke, I've found that "gCEA" works really well-- nice tension, nice resonance. And on tenor scale, I'm a fan of taking things "down" a full step, to "f Bb D G", which to my ear really gives a tenor a nice smooth sound and just the right amount of string tension.
"That's my story and..."