Those two coins are my big bet.
Sure I hold Shift, Waves and SpectreCoin as well because I trust they will have a great Q2 2018, but I think I will get rid of those before summer 2018. Probably even get completely new coins.
Also, for me it was a decision between Wagerr and COSS. I made a damn good decision buying COSS at $0.3. Even after this crash I made x3.
Also, I like the new UI. But it looks different from other exchanges, I guess that's why many dislike it.
Bittrex UI is extremely confusing to me. I don't like it at all and I prefer COSS UI over Bittrex or HitBTC. The next best is Cryptopia.
Binance's UI is what I like the most. COSS should also make their UI like Binance