My favorite are XZC because zcoin utilizes the zerocoin protocol to provide anonymous transactions in a unique scalable way. its a cheap privacy coin and i always liked it and have high hopes for it in the future
my second fav coin is NEO because i like the concept they are doing and i like the fundamentals, its a new coin that already made wonderful progress!
these are the only 2 coins im holding at the moment as well
what about you?

Major should always become my favorites coins but just try to believe on the UTNP and CS. Both will have created a something useful. There was a bunch of altcoins which worth to invest right now but both were including in my main consideration in the cryptocurrency.