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urrm this might help...(ive kind of longer then meant to)

The Eb alto saxophone sounds a major sixth below the written pitch
Rule: Written C sounds Eb

The Eb Baritone saxophone sounds an octave plus a major sixth below what is written
Rule: Written C sounds Eb + ocatve lower

But basically if you wrote on paper same E, the bari would play it just an octive lower then alto.
Meaning playing a low E on alto and wanting to play that note on bari just write one up an octaive like you thought to get the same sound.

This also so applies to the difference between the soprano and tenor just with
Rule: Written C sounds Bb n stuff...

though on another note to that i thought that normally a saxophone quartet had one soprano sax one alto one tenor and one baritone...

I'm back from vacation!

i just play alto, but next year when i'm first chair, i'll get to play soprano whenever we need it

At my school we have a small band so I end up having to play soprano, alto, tenor, AND bari, depending on what pieces we are to perform. My favorite is the Tenor, I like its sound the best and it sounds better in jazz. (to me it does at least)

These are my tenor mouthpieces

The far left is a Claude Lakey and they're pretty big sounding and bright mouthpieces mainly for jazz/funk/rock stuff. And it's very good for alto's but tenor and soprano's arent recomended.
(i'm gonna go right)
Next to that one is the Yanigasawa which i find not bad for soprano's not too stuffy on the sound and they project well.
The metal one next to that is Selmer C** which is nice and was one of the very first mouthpieces i bought but the damned things are so expensive. (shakes fist at selmer) They arent bad mouthpieces but i'd try it out to see if you like it.
Next to that one is the Hite Premier which is a mouthpiece for symphonic and classical settings. They do make nicer ones but i havent played on them so i dont have an opinion.
Next to that is the Meyer which is the mouthpiece for all around playing. Most teachers recommend them when a student is looking for a new inexpensive mouthpiece.
Then on the far right is the Otto Link which isnt bad just takes some getting used to. The older models are awsome but super expensive. The newer ones are great but you might end up trying a few before you settle on one.

The soprano is an interesting horn and i prefer straight to curved but there are some cool old vintage sopranos that are curved but it's more of aesthetic value to me.
Nice soprano's are made by Yamaha, the mid range ones. Look into the YSS-475 it doesnt have a curved neck, it's actually one hole sax. Some sopranos have optional necks but i think the whole sax on this one gives it a better sound. They're actually inexpensive for a mid ranged horn and highly recommended.
That's actually the only sax i recommend that's inexpensive.

I hope my info helped you at least a little. 3nodding

Well i like Selmer and if you're looking for those try the Series II or Series III horns which are made by Selmer Paris. I really liked the Selmer Reference 54 which is supposed to sound and play like the saxes of the 50's. These horns are nice but i'm not a big Selmer guy and i think they overprice their horns.

If you're looking at Yamaha they have a great line of saxes to look at. The 62 series is a great pro line horn and is something that you could play through college with. Great action, wonderful sound and a real easy horn to play.
Another great yamaha horn is the custom series i actually own a Yamaha custom 875 which is a wonderful horn. The difference in this horn from the 62 models is the keys are made slightly different which makes for fast action and easy finger placement. The sound resonates nicely specially with the G1 neck.

Another brand you should look into is the Yanagisawa those are pretty good horns and are just slightly cheaper than the other pro horns.