my suggestion/experience (just personal opinion)..
- etf funds means in a way index funds which means market. we invest money by hoping market perform higher which means indexs perform higher so do etf, in that logic all etfs make sense.
its for long term investment, start basic and review after a year and see how much deviation compared to official index. too much, change the fund.. little ok.
there is no best or worst.. today best tomorrow worst or tomorrow worst after year best.
its your decision.. jump the lake and start swim.