Firstly i would suggest you to invest in xlm , it is currently getting pumped but for long term wise i feel it can go hand in hand with xrp.
Second coin you should go with is either nem or ada as others suggested. Now nem has had a rough year but the end turned out really well for them. I'm sure they are working on something which will push the price even further.
For ada the only thing I'm waiting for is mining , they claim to allow users to mine pretty soon and there are rumours it might get integrated with ledger or trezor.
with xlm being pumped right now, is it a good idea to wait and see what what kind of lows it gets and let the pump settle down before investing?
Where could I find information like rumors or good information about good coins?