I really want to learn either Violin, Viola, Cello, or Upright Bass, but I don't know which to choose. After playing Euphonium for 4 years and Tuba for 3, I've grown to love rich, deep tones in music, but I also love the sound of a Violin. I haven't heard much of the Viola or really seen much of them either, but I don't want to write it off just because I haven't heard much of it. Also, I was wondering if I should buy acoustic or electric. For the Violin, I know acoustic ones are cheaper, but for Upright Bass, it looks like the electric models are a bit cheaper, but then I'd need to buy an amp as well.
Anyone here have experience on any of these instruments and want to offer some advice?