First, a disclaimer--I spent a year working for Suzuki as their harmonica
repair guy.
I really like their SCX line, they are well built, airtight, sound great,
and good bang for the buck (used to be really good before they raised the
prices).
If you get an SCX-48, get it in G--C is too high.
For that reason, I recommend you get the SCX-56, which starts on G, but is
tuned to C solo tuning--just like holes 4-7 on a diatonic, but on holes 3-6,
7-10 and 11-14 (unless you start counting from hole 3, the first C--in that
case, 1-4, 5-8, and 9-12.)
I like the CX-12 too, but they cost a bit more, and only come in 12 hole
models--if you get one of those, get a G!