on the basic level all stablecoins are same, that is having $1 value. But going into depth some are centralized, some are decentralized and All are run by different companies.
Can you tell me which are decentralized. That would be interesting. I know of only one.
I would like to examine this or ask a more knowledgeable friend to give me his opinion.
I don't know if he is able to reply so let me take the opportunity and answer you. So basically DAI is one stable-coin that is decentralized and has a very transparent mechanism. Personally I also use tether like many others but honestly speaking I love the mechanism and working way of Dai because it is decentralized and hence it cannot dump the market of its own. I am not saying that tether will suddenly dump their coins and scam but it is better to be safe than sorry and decentralization was made to let people control the pricing.
I still prefer tether because it has monumental cap and the volume is even more impressive but then if moving forward someone asks me the future for stable coins, I would without hesitation vote for Dai.