Of course, all-time favourite always goes to Bitcoin and Ethereum, now I'm also loving ripple because of its lower fee when you withdraw from exchanges. Imagine .15xrp withdrawal fee is really great isn't it?
you are correct everyone thinking about bitcoin and ethereum, maybe it's that became very popular. but ripple and stellar now being the main ones for me, not because of the cheap cost, but look at the market conditions that I see these assets have a market movement fast enough.