Vanguard is excellent. As in, the SEC investigated them for having too LOW of fees. I think Buffet has said that his wife(s) should put all their money in vanguard mutual funds when he passes.
Last recession, I threw what money I had into basic industrial stuff (e.g., argon gas producers), larger back of the house tech companies, blue collar things (e.g., uniforms), smaller luxury consumer (e.g., booze), HFTs, several commercial/non residential REITs, and a fair number of the dividend aristocrats with DRIP set on. DRIP stuff went well due to price averaging. Blue collar stuff went well, I assume because corporate america was able to snag a bunch of desperate people. Booze went very well, especially diageo since their brands are super popular in china. Tech did well, because there were some attempts at consolidating the industries. HFTs are performing well, although I don't fully understand how to judge their performances. Aristocrats went well, so long as I stayed up on all the google alerts and read their news. I stupidly included a mailing company, as if mailing isn't a dying industry.
Lost money on baby boomer bets like buying funeral home stocks, because I thought they'd start dying off. Stayed away from AFLAC because I thought people would try to go on disability, and I was wrong. Lost money on shipping stocks.
Right now, avoiding bond funds. Avoiding international funds (don't trust chinese prospecti, can't gauge the effects of brexit). Mainting but not increasing non commerical REIT holdings. Looking at increasing holdings in large apartment companies, because I believe they are pricing their units in areas in such a way as to prevent individuals from buying, so as to create lifelong customers. Looking at increasing HFT holdings. Looking at increasing consumer and small business loan/finance companies. Have several areas I'm looking into, but have not done my homework .
Overall dip philosophy: consumers get screwed, and put into lower paying stuff. I also tend to read the 13Ds and 13Fs on the SEC website. You don't have to be smart, you only have to do what the smart people do.