I-BONDS DEFINITELY NOT worth the hassle. I accidently credit wrong type account and it will take 7 months to correct. Then when you go to case them in 7 WEEKS , old e-bonds you go to bank and cash them in. Granted they let you create an account immediately and take your money but cashing in should also be immediate.
I used to have like $150,000 in I-Bonds, but there is no short-term reason given that the rates have dropped below T-Bills. I am selling my pile. Of course, I will always watch the rates, but for now I’m making an exit, and I hate dealing with TreasuryDirect.