Thiara Winteri is a snail that is *very* similar... they don't get quite as big as MTS and (supposedly) reproduce slower, plus they have a nifty texture to their shells. I have a ton of them if you want some - all I'd ask is that you pay shipping.
That said, you won't *ever* be able to get rid of them once you have them. I don't find them to be a problem (they only come out at night or when there is food around) and since I have sand in all of my tanks I consider them to be a good thing.
I started with 20 that I got on ebay.. I probably have thousands now between 5 tanks.