If you have a good long term strategy you shouldn't be worried about timing the market. I invest in a few ETFs, 80/20 stock to bond ratio, a mix of domestic USA / international.

I probably won't make massive gains but in the long run I'll make ~5% steady.

I think if you value steady returns over wild swings you can do well with Vanguard ETFs - the low overhead offsets the les returns than day trading / active buying and selling