Looks like vanguard (vmfxx) is offering 4.78 and apple is offering 4.15. That's about 60 bps, it's not world changing, but vmfxx is a better deal but it may be a little more cumbersome for some.
Are the rates much higher? Didn't seem so at the online banks.
First think I looked at was vio, more than 50 bps higher.