I already know that I bought a size too wide (6E; should have gone 6D I think), and there is definitely heel slippage. I'm planning on selling them and buying another pair, but I'm a bit worried that my problem will not be solved by going to a 6D or C. Given that Alden does not make a 5.5, I might just be shit out of luck.
To be fair, I have a pair of Alden #8 LWBs in 6D (Barrie) and they fit pretty snug.
I would suggest a 6D. The toe is not so much the issue, but the heel slippage. Most people wear the same in Barrie and Trubalance.