Is there a general consensus on which bitcoin EFT is best?

Just as the title says. I am looking to invest in bitcoin in my Roth IRA. I know that there are a few different bitcoin EFT’s out there. I am just wondering if there’s a general consensus on which bitcoin EFT is best? Are there some that should be avoided? And while I’m at it, is it even a good idea to invest in bitcoin in my Roth IRA. I know there’s not your key not your coins but I believe this will be a good opportunity for me to get some exposure in my retirement accounts. It will also help me avoid having to deal with exchanges.