Any advise for a 40yr old with $100k saved. +800 Credit score. Should i buy cash or mortgage to start my portfolio for first investment property?

Curious to hear people’s views on the case? I could see the entire industry being changed or some different legal language to some legal forms and things more or less continuing as is. As an aside I do think the combo...

Unfortunately I've been away for a few months while taking care of some personal matters, so I haven't been able to keep up on discussions. 
However, several months ago there were ample amount of folks here insisting...