A C-mel may prove to be a novelty in your church - especially if you need to read music, don't have Eb or Bb charts, and only want to play the exact melodies.
But I agree with the others - play soprano, alto, or tenor if at all possible - more music available, mouthpieces are usually better (although THAT is really subjective), and future expansion (playing goals, etc.) are improved with a more modern horn. Learn to play them by ear.
There are plenty of good vintage Bueschers out there - TrueTones, Aristocrats and Buescher 400's (Top Hat and Cane models) all before the Selmer buy-out. ALWAYS buy LOW-PITCH (or LP).
If you want something new and inexpensive, look to the Taiwanese house brands - Dave Kessler's Kessler Customs are among the best of these types of horns.
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