I want to buy IBIT ((Blackrock iShares Bitcoin Trust ETF) and BITO (ProShares Bitcoin Strategy ETF) in Fidelity account.  IBIT is a a spot Bitcoin exchange-traded fund (ETF) with low fee 0.25% directly holds actual Bitcoin in its asset.  BITO is the future contracts trading monthly with higher management fee 0.95%.  BITO has a contango problem by rolling futures contracts can erode returns compared to spot Bitcoin.  BITO pays monthly dividend that I can apply dividend reinvestment.  Hacker can hack IBIT but can not hack BITO.  In the long run IBIT or BITO which one is the best ETF to invest?  Thanks.