Bitcoin still remains my top notch coin to trade, with some few altcoins on the top 20 (some of them though). Basically, most of the other altcoins below that for me, is more like a long term thing for me, which I tend to buy low based on some trend changes, and then sell high as the case may be. However, for short term possibilities and gains, I tend to prefer, bitcoin the more for a lot of reasons. For strategies, I am a momentum trader, and I still do that making sure my stop loss is intact.