BRSousa wrote:
I vote Sousaphone. In my opinion they are going to be more abundant, so you will be able to find one reasonably priced in a playable condition.
And often ergonomically better. I have an Eb helicon just like the one you'd see on one of the Kočani Orkestar CD covers. Its previous owner couldn't bear the contorted right arm position. For me, it isn't as bad as the picture recently posted here in a question about detachable bells on helicons, but it does involve a little crick in the neck.
The first problem is that the leadpipe is fixed, not a flexible multi-bit arrangement as commonly found on sousaphones, so your shoulder to mouth distance just has to be close to the design target. (I've wondered, though, if that really has more to do with why they might sound more like lap tubas, rather than the bell flare - isn't the leadpipe kind of a critical acoustic element?)
Second problem is rotary valves, which displace your hand position several inches inboard. A few older designs can be found that fold the usual rotary assembly over, so the keys are at right angle to the linkage and it looks like you get a couple inches back, but it must not be as great an idea as it looks, since no one does it any more.
US made helicons typically don't have these problems, they're just like sousaphones (with poorer projection, more difficult to transport, and more of a threat to innocent bystanders to your left.)
If you have some kind of folk music band, like where you're all wearing matching Romanian costumes and stuff, then by all means round up a helicon (and lots of unlacquered oval baritones!) What I've seen going on lately, though, is a kind of eclectic fusion of Balkan with other street band influences, and they either use lap tubas or sousaphones, can't recall a single helicon. The tuba player for I think one of the best US Balkan bands, has been known to post here historically, plays a common C tuba -- PT-something-or-other maybe, I don't follow that stuff - holding it standing up without visible aid of a strap or anything, when I saw him.