Lux Investing - what is best way to invest $15,000 in high yield ,long term CD or IRA?

what is best way to invest $15,000 in high yield ,long term CD or IRA?

You cannot just dump $15,000 into an IRA. There is an annual contribution limit if you qualify. Without knowing more about you it's impossible to really give you investment advice. How old are you? What other funds do you have? Unless you are up there in age, I wouldn't stear you toward a long term CD. Look for a good Mutual Fund. If your employer offers a 401k, put in the maximum allowed into that.
I strongly suggest you to stay away of bonds. I suggest you to invest in stocks. I can advice you.
There are no high yield long term CDs. None of them will beat inflation+taxes. The same goes with annuities. The closest thing to those and are gaining worth right now are I-bonds in a Roth IRA at 6.7%.
put as much money as you can in tax advantaged programs like an IRA.