If you were stranded on an island and could only have four ETFs next year, which would they be? Several stock market strategists share their top ETF sector investment ideas for 2013. Jeremy Held, director of research at ALPS Advisors in Denver, with $7.6 billion in assets under management: Energy Select Sector SPDR (XLE). The combination of strong fundamentals, abundant overseas exposure and historically low valuations should make energy the best