RE:RE:Premium continues to shrinkcttglvr...good question
The Bs were reset last year for the next five year term so the dividend stays constant until 2027.
The short answer to your question is that once the 5 year dividend reset is done, the shares are priced in the market so that outside of small day to day fluctuations, the yield on any of the preferreds is basically the same and so it really doesn't matter which one you buy. So right now the yield on the Hs is a bit higher than the Bs but next week it could be opposite. The only real consideration is to keep track of the reset dates since they are different for each of the preferreds. Going into a reset you will see some repricing depending on interest rates.
In my case, I don't expect to hold the preferreds much beyond 2 more years (or shorter) assuming interest rates fall as per my base case scenario. So I expect to sell long before the next reset date for any of the preferreds and increase my asset allocation back to a higher weighting of common shares.
Hope this helps...