right now i am on a selmer c 80*
Well, the nowadays ubiquitous S80 C*, is not a bad mouthpiece, one that most modern players started on together with the Yamaha and perhaps the Rico Graftonite.
First of all as others have said the sound of a mouthpiece comes from its internal shape and from your way to play it (try to move your underlip from tucked above the teeth to a more protruded position as hear what happens there, pretty amazing change right?).
Secondly the desire to play a metal piece is mostly driven by coolness factors more than anything else, I know I did, and I got myself a berg larsen with which I was happily screaming away for some time before understanding that that wasn't what I really wanted.
So the search for a mouthpiece is much like the search for identity for an adolescent , there is some time needed for experiments and then through severals rites of passage we , hopefully find a direction to pursue.
Budget is a concern, 100$ is not really much, so why not considering something used?
There must be a ton of information on this forum on mouthpieces but the most important decision is to decide if you want a low baffle or a high baffle. Generally one can say that the first ones are dark and spread sounding and the second are bright and focussed.
To give you some indication the first would be epitomised by the Otto Link STM and the second by a Berg Larsen . Why don't you go to try these in a shop and see which one you like? I am afraid that both are, new, above your budget, so, how about reconsidering the metal thing and try the same brands but in hard rubber?
There are now many mouthpiece copies from China, there is no way to tell, before buying them, what they play like. Those can be an alternative and if you buy them cheap and resell the ones that you don't like , a calculated risk. Good luck.
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