Yes... you're got to take your horn to a well stocked shop and try out as many as you can.
I use a David Gardala Crescent for Tenor, which gives a great sound if you are paying over electric instruments but is very adaptable and a Jody Jazz NY for Alto - this is very smooth and again has a very broad range of sounds.
I also play the DG crescent in an orchestra which normally a no-go as conductors do not usually like metal MP. It has taught me to control the volume and centre the sound more so than I normally would.
These are both quite pricey but the DG in particular is often on ebay for around the £100 mark.
Also also have a Yanigasawa silver Alto MP which is very close to the Jody Jazz and is about half the price.
Maybe I am just a mug for the hype but I have to say that I have found that the more expensive mouth pieces do seem to be able produce a broader range of sounds whilst maintaining controllability.
But it really comes down to what is right for you. I would list the following as my top three criteria:
1) Playability. It's no use have a great sound if you can't hit those high and low notes or manage large jumps. If the MP is difficult to play it will hinder your progress.
2) Predominate style - Jazz, Rock, Orchestra, Ensemble
3) Quality and range of tones
If you do buy on ebay there's a pretty good chance you can resell for a similar price if you don't like it. I suggest that you watch prices carefully first for a few weeks to get a feel for the prevailing values. I did this with my DG Crescent but went through three others that I bought and resold to get to it. I bought my Jody Jazz in Sax.co.uk in Denmark street London - there have a good selection and are happy to let you take your time.
Do not consider what other people play.
I suggest you write your own list of criteria.