Hi, if you check out the yeilds with comparable muni and corporate maturities, you will see that munis will have higher yeilds at safer credit risk. But then again, I don't have the retail list of the larger brokers, but I actually trade the bonds, so I see higher yeilds.
Rather than buy GE bonds 2 years out and get XX yeild, but AAA texas GO bonds with a much higher yeild. But then again, I can get this for my clients, I don't know how much the yeilds are watered down when you buy from scottrade or another broker for example.
In order to even consider buying bonds, you need to look at the treasury yeild curve and compare the yeild premium. I can go on and onm, but safe to say, you definetly need to know what you are doing so you can maximize yeild and lower risk. maybe a CD or money market is good for the rest